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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 8651. |
??? ? + ??? ? = 1, ? = 30° and B is an acute angle, then find the value of B |
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Answer» SinA+cosB=1 Sin30+cosB =11/2+cosB=1CosB=1-1/2CosB=2-1/2CosB=1/2CosB= cos60 B=60 Ans Sina + Cosb =1Sin30 +cosb = 11/2+cosb=1Cosb =1-1/2Cosb=1/2We know that cos60 = 1/2=}B= 60 Sin30° + cos 60° = 1(Sin 30° = 1/2 And cos 60° also 1/2)1/2+1/2=2/2 that is 1 B= 60° |
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| 8652. |
Prove that 7√5 is irrational number |
| Answer» Let us assume that\xa07√5\u200b\xa0is rational numberHence\xa07√5\u200b\xa0can be written in the form of\xa0a/b\xa0where\xa0a,b(b is not equal to 0)\xa0are co-prime⟹7√5\u200b=a/b⟹√5\u200b=a/7bBut here\xa0√5\u200b\xa0is irrational and\xa0a\u200b/7b\xa0is rationalas\xa0Rational is not equal to IrrationalThis is a contradiction\xa0so\xa07√5\u200b\xa0is a irrational number | |
| 8653. |
Find the value of a when distance between the point ( 3,a) (4, 1) is √10 . |
| Answer» a=4 | |
| 8654. |
Find the distance between pair of points (a sin a, -b cos a) (-a cos a, b sin a) |
| Answer» This cannot be typed here it can be done only on paper | |
| 8655. |
In trignometery how to know , what is base, perpendicular and hypotenuese |
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Answer» In the right angled triangle the opposite side of the right angle is known as hypotenuse . And other two sides are base and height respectively. The opposite side of the given angle is known as perpendicularAnd the side opposite to the right angle is known as hypotenuse (the longest side in rudgt angled triangle) |
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| 8656. |
The mean of the following frequency distribution is 24. Find the value of p |
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| 8657. |
Prove that 4-3✓2 is an irrational number |
| Answer» Let us assume that 4-3root 2 is rational So we can write 4-3root 2 as a/b where a and b are co prime & b is not equal to 04-3 root 2=a/b-3root 2 =a/b -4 -3root 2=a-4b/broot 2 = a-4b/3broot 2=-a-4b /3bHere root 2 is an irrational number. But a-4b/-3b or -a-4b/3b is rational number. Therefore it is a contradiction to our assumption that 4-3 root 2 is a rational number. Thus 4-3 root 2 is irrational number Hope it helps | |
| 8658. |
Can anyone tell me that what is the imp question from chapter 12 for standard maths |
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Answer» All given figure vale questions important h or exercise 12.3 me 2nd, 4th question very important h or 12.3 exercise se jyada questions aate h board me All question of exercise 12.3 |
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| 8659. |
The class students of second a |
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| 8660. |
Class 10th find C if the system C x + 3 y + ( 3 - C )=0 and 12x +Cy =0 has infinitely many solution |
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Answer» Jayada briefly nahi ho payega .plz try to understand. SolutionC/12= 3/C cross multiply .C= ✓36.C=6. ans |
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| 8661. |
Koi mujhe oswaalsample paper provide kra do please |
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Answer» How Please mention your address Ok Theek hai |
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| 8662. |
Cabse test paper kaise download karu plz bata do |
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Answer» Ha hai Youtube per jakar dekh lo |
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| 8663. |
If xy = 180 and HCF (x,y)=3, then find the LCM (x,y). |
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Answer» LCM × HCF = Product of two numbersLCM × 3 = 180LCM = 180÷3LCM = 60 60 We now that,"LCM × HCF =product of two number"(LCM)(3) = 180LCM = 60 |
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| 8664. |
A garden roller has a circumference of 4m.find the number of revolution, it makes in moving 40 m |
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Answer» Can you please solve more easily 10 Circumference of circle= 4m2×22/7×r = 4r = 4×7/44r =7/11Let n number of revolution makes in moving 40mn × 2 ×22/7×r = 40n ×4 = 40n = 40/4n = 10 |
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| 8665. |
If a+c= b then find the roots of ax2+ bx+ c |
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Answer» Please provide complete solution Roots = -c/a, -1 This question solved by quadratic equations formula |
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| 8666. |
624+68756 |
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Answer» khud se kr le.... 10th mein aakr division nhi pucchte 624+68756=69380 69380 |
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| 8667. |
99/4 |
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Answer» 24.75 24.75 |
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| 8668. |
In triangle OPQ, right angled at P, OP = 7cm and OQ - PQ =1cm. Determine the value of sinQ and cosQ. |
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Answer» Ha ncert ka h Given: OP=7cm, OQ-PQ =1 OQ = 1+ PQOQ^2 = OP^2 + QP^2(1 + PQ) = 7^2 + PQ^21 + 2PQ + PQ^2 = 49 + PQ^22PQ = 48PQ = 24OQ = 1+PQ = 1+ 24 = 25SinQ = OP÷OQ = 7÷25CosQ = QP÷OQ = 24 ÷ 25 Ncert ka h Ye question kis page me hai |
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| 8669. |
For 3x - 7y= 10, Express y in terms of x |
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Answer» for 3x -7y =10express yin term of x 3x - 7y = 10-7y = 10 - 3xy = 10 - 3x÷ -7Or3x -10/7 y=3x-10/7 |
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| 8670. |
If all the zeroes of cubic polynomial x^3+ax^2-bx+c are both negative then a b and c all have the |
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| 8671. |
5x -37=1 |
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Answer» 5x - 37 =15x = 1+375x = 38 x = 38/5 x = 7•6 Ans - 7.6 5x-37=15x = 1+37 5x = 38 x = 38 /5x = 7.6 5x=38=x =38/5 =x=7.6 |
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| 8672. |
Time table kab aayega if any one knows please tell me |
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Answer» 2nd February 2021 2 feb 2021 ko...... About which timetable you r asking ?? March Soon. |
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| 8673. |
Prove that under two is an irrational number |
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| 8674. |
Please koi mujhe oswaal sample papers provide kara dijiye online ?? |
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Answer» Which subject?? Iss app pr link share nhi hota Aapke pass koi link nhi h kya jis pr available ho ? Mere pass hai pr kaise provide kro |
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| 8675. |
If pe =0.005 then probability of not E |
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Answer» P (getting not e)=1_0.005=0.095 0.995 P(not E)=1-0.005So,P(not E)=0.995 |
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| 8676. |
A CYLINDRICAL CONTAINER OF R |
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| 8677. |
Ex- 5.1 |
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| 8678. |
Cos square theta minus 3 cos theta plus two to the whole divided by sin square theta equal to 1 |
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| 8679. |
2x +3y -5 =0 6x + ky -15 =0 find the value of k |
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Answer» 9 9 Value of k=9 Value of k is 9 |
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| 8680. |
solve ( x + 2 ) ( 3x - 5 ) = 0 |
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Answer» 3x²+x=10 3x²+x-10=0 3x²+x-5=0 3x^2+6x-5x-10 =03x^2+x-10 =0 Hgg |
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| 8681. |
If xy=180and HCF(x,y)=3,then find LCM(x,y) |
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Answer» 60 60 LCM×HCF = a×bLCM×3 = 180LCM =180/3LCM = 60 ans. LCM is 60 180 divide by 3 so the lcm is 60 |
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| 8682. |
Consider the following distribution class 0-9 |
| Answer» Please ask question with complete information. | |
| 8683. |
What is the formula of 2SinA.... Anyone having tendency to give my answer |
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Answer» These answers are wrong give ... Anyone else want to tell answer 2cosA sin$× cos$ |
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| 8684. |
Formula of median of individual data |
| Answer» If it has an even number of observations, the median is the average of the two middle values. ie n+1/2 where n - number of observations x tilde- symbol for median To find the median: 1) Arrange the data values from least to greatest. 2) If necessary, use the locator\'s formula c = (n + 1)/2 where\xa0n\xa0is the total number of observations. 3) Look for the value at (n + 1)/2. If\xa0c\xa0contains a fractional half, it means the median is the average of two values. For example, if the location is 3.5, the median is the average of the 3rd and 4th data points. | |
| 8685. |
Formula of median for ungroup data |
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Answer» L+N/2-CFupon F×H l+(n/2 - CF /f)h If a data set has an odd number of observations, then the median is the middle value. If it has an even number of observations, the median is the average of the two middle values.ie n+1/2wheren - number of observationsx tilde- symbol for medianTo find the median:1) Arrange the data values from least to greatest.2) If necessary, use the locator\'s formula c = (n + 1)/2 where\xa0n\xa0is the total number of observations.3) Look for the value at (n + 1)/2. If\xa0c\xa0contains a fractional half, it means the median is the average of two values. For example, if the location is 3.5, the median is the average of the 3rd and 4th data points. L+ h/ u + lower limit |
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| 8686. |
4x+4√3+3 find the root |
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Answer» D=0or96 P(X)=04x+4√3+3=04x=-4√3-3X= -(4√3+3)÷4 Bro this is a linear equation, just put them equal to 0And you\'d get your answer.Tho the answer is also given belowx= -3-4√3÷4 |
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| 8687. |
x+y=5, 2x+2y=10 |
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Answer» a1/a2=b1/b2=c1/c2 As the equations follow the criteria of being a coincident line.Hence, they have infinitely many solutions. The lines are coincident, having infinitely many solutions. |
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| 8688. |
Chapter 7 solution |
| Answer» U can find it from ncert solutions | |
| 8689. |
Mayank student of class 7th |
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Answer» So? ? |
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| 8690. |
Prove that the difference and quotient of 3+2√3 and 3-2√3 are irrational |
| Answer» Just prove √3 irrational. Then all is done.Just solve it. Hope it helps. | |
| 8691. |
Express 234 as the product of primes. |
| Answer» 234 = 2 × 3 × 3 × 13 | |
| 8692. |
Prove under root 2 is a irrational no. |
| Answer» Let √2 be a rational no. in the form a/b, where a and b are integers with no common factors other than 1.:. √2 = a/b=> a = √2b=> a²= 2b² -----(I)So, 2 is a factor of 2b² and a². Hence, 2 is also a factor of a.----(ii)Again, let 2m=a (where a is an integer)Putting a=2m in (I),(2m)²=2b²=> 4m²=2b²=> b²=2m²So,2 is a factor of 2m² and b². Hence, 2 is also a factor of b.---(iii)From (ii) and (iii),2 is the common factor of both a and b. But this is not possible, since a and b has no other factors than 1. :. Our assumption is wrong. √2 is an irrational number. | |
| 8693. |
How to draw a perpendicular BD on AC in a right triangle... |
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Answer» Heeee....I tried every way possible to draw the perpendicular but I wasn\'t able to draw a perpendicular BD on AC in a right triangle.... This is my doubt too?? |
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| 8694. |
How many zeros are there for the polynomial (shape of the wire) |
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Answer» There will be 2 zeros for the polynomial (shape of a wire) And I from India ?? tamil nadu district.. ? 1 will be my answer because of There are only one ray passing through the x axis ?? |
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| 8695. |
What is a square - a |
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Answer» A square is closed , two dimensional shape with 4 equal sidesSquare is a quadrilateral Square is a quadrilateral where each corner has a angle of 90 degree and opposite sides are parallel to each other. |
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| 8696. |
Heron\'s formula |
| Answer» To find s= a+b+c/2Heron\'s formula = √s(s-a)(s-b)(s-c) | |
| 8697. |
Maths guide |
| Answer» Please ask question with complete information. | |
| 8698. |
INTRODUCTION TO TRIGONOMETRY1) evaluate sin teta = cos teta Sin = 1√3 |
| Answer» I have also not able toSolve .... Heee?? | |
| 8699. |
In Chapter 6 triangles which questions are cut |
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Answer» Theoram 6.6 and 6.9 Are u sure? All |
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| 8700. |
Art integration music and dance in maths in arunachal pradesh |
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