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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.
| 15651. |
2 x upon 1 + 3 y is equal to 13 , 5 upon x minus 4 upon y is equal to minus 2 |
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| 15652. |
Exercise 3.1 |
| Answer» Which question | |
| 15653. |
How to prove trigonometry questions easily? |
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Answer» Learn basic formula of trigonometry chapter First Convert it into sin and cos Just try to remember the basic concept of proving |
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| 15654. |
16x-10/x=26 |
| Answer» X=-1 | |
| 15655. |
If cosecant a + cot a = m show that m square minus one by m square + 1 = cos a |
| Answer» Lhs (CosecA+cotA)^2-1/(cosecA+cotA)^2+1CosecA^2+cotA^2+2cosecAcotA-1/CosecA^2+cotA^2+2cosecACotA+1(CosecA^2-1)+cotA^2+2cosecACotA/CosecA^2+(cotA^2+1)+2cosecAcotACotA^2+cotA^2+2cosecACotA/CosecA^2+cosecA^2+2cosecAcotA2cotA^2+2cosecACotA/2cosecA^2+2cosecACotA2cotA(cotA+cosecA)/2cosecA(cosecA+cotA)After cancellationCotA/cosecACosA/sinA*1/sinAWhich is cosAHence proved | |
| 15656. |
Why sodium chloride have high melting point? |
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Answer» Because of its rigid structure due to strong ionic force of attrectio........ Sodium chloride means NaclAs its ionic bond is very high it means its structure is very rigid So to break up this high temperature is required That\'s why it has high melting point Nacl make ionic bond we know that ionic bond are only solid that\'s Nacl has high melting point. |
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| 15657. |
In triangle ABC,AB=AC side BC is produced to triangle• prove that (AD2-AC2)=BD×CD |
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| 15658. |
Graph of quadratic polynomial is |
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Answer» Parabola Parabola |
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| 15659. |
Exercise 4D question no 9 |
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| 15660. |
What is the formula of sector |
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Answer» . Minor sector-πr²×thita/360°and major sector — πr²-πr²×thita/360° Minor sector area of circle is ∅÷360×πr²...Major sector area of circle = 360-∅÷360×πr² |
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| 15661. |
If secthita +tan thita = x then sec thita= |
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| 15662. |
If A+B=90° prove that √tanAtanB+tanAcotB/sinAsecB--sin²B/cos²= tanA |
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| 15663. |
Find the area of a triangle whose vertices are (1 -1) (-4 6) (-3 -5). |
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Answer» 6 is the answer Use the formula 1/2{x1(y2-y1)+x2(y3-y1)+x3(y1-y2)} |
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| 15664. |
What should be subtracted from 1lakh to get largest 4 digit number |
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| 15665. |
If the squared difference of roots of an equation x2 + px +45 is 144 find the value of p |
| Answer» 9c | |
| 15666. |
The sum of two number is15 and the sum of their reciprocal is 3/10.find the numbers |
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Answer» One number (x)=5.Other number(y)=10. One no is 5and the other one is 10 One number is x other number be Y . X+y =15 .1/x+1/y =3/10 solve this equation by his own mind |
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| 15667. |
Prove that Two plus under root five is an irrational number |
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| 15668. |
Prove under root 5 is irrational? |
| Answer» Let us assume that √5 is a rational number.we know that the rational numbers are in the form of p/q form where p,q are integers.so, √5 = p/q p = √5qwe know that \'p\' is a rational number. so √5 q must be rational since it equals to pbut it doesnt occurs with √5 since its not an integertherefore, p =/= √5qthis contradicts the fact that √5 is an irrational numberhence our assumption is wrong and √5 is an irrational number.\xa0 | |
| 15669. |
The LCM of three numbers 28,44,132 is |
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| 15670. |
What is a line? |
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Answer» The joination of two point is called line a line: • is straight (no bends), • has no thickness, and. • extends in both directions without end (infinitely). One end makes it a "Ray", and two ends makes it a "Line Segment". Line is a ray which never ends or meet anywhere |
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| 15671. |
(a+b)cube identity |
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Answer» (A+B)(a²+b²+2ab). a^3+ b^3+3ab(a+b) |
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| 15672. |
Which pattern of básico math |
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Answer» Basic Paper come from NCERT only...All the best..?? For good marks do NCERT only .. There is no pattern for basic Maths |
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| 15673. |
x+2y=5 and 2x-3y=-4 find its area bounded with x qxis |
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| 15674. |
If cos equal to 3upon5 find the value of sin |
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Answer» 4/5 4/5. 4/5 |
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| 15675. |
Find the term from the end of A.P. 17,14,11,.................-40 |
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Answer» Formula is{ L + (n-1) d }...... Pk , formula is wrong l is last term Formula is{ l- (n-1)d} Which term?? |
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| 15676. |
Prove that √3 - 5 is an irrational number. |
| Answer» Consider it first rational and then use method of contradiction...? | |
| 15677. |
1/secA+tanA - 1/cosA =1/cosA - 1/secA-tanA |
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| 15678. |
An observer 1.5m tall is 28.5m away from a chimney the angle of elevation of the top of the chimney |
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| 15679. |
Which type of questions came in basic maths |
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| 15680. |
Find the 10 term of ap is 3,8,14 |
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Answer» It\'s 48 Aps ...are not arranged in sequence.... 48 |
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| 15681. |
Find prime factor of 5005 |
| Answer» 5 ×1001 | |
| 15682. |
If the area of quadrilateral is zero then the four vertices are -----------------. |
| Answer» Collinear | |
| 15683. |
What is the syllabus of mid term 2019- 20 maths. Is trigonometry envolve |
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Answer» Thnxx ? Ch _1,2,3,4,5,7,8,14 Yaa it also involve trignometry |
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| 15684. |
Idvdo |
| Answer» ?? | |
| 15685. |
A boat upstrem 30km |
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Answer» Ok Describe ur look Tell something about ur self No Rapper Which topic ....u choose Your question is incomplete ...... |
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| 15686. |
Kis school ma syllabus pura complete ho gaya |
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| 15687. |
How we know that prove that....... types of question first of all do construction |
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Answer» Pls write properly Aapka question mujhe samaj nhi aa rha , aap plz dubara likhdo.. |
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| 15688. |
If the unit\'s and ten\'s digit of a two digit number are y and x respectively, then find the number |
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| 15689. |
Find the zeros g(x)=a(x2+1) -x( a2+1) |
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| 15690. |
If side of equilateral triangle is 3 what will be its altitude? |
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| 15691. |
5 root 5 x square + 30 X + 51 find zeros by completing square method |
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| 15692. |
-37,-33,-29 ap |
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| 15693. |
2÷35-5×7+9=? |
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Answer» -25.6 First divide then multiply then add and then subtract |
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| 15694. |
What is the definition of zero |
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| 15695. |
Has no zero means in ap |
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| 15696. |
Find two consecutive positive integers ,sum of whose square is 365 |
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Answer» Let us two positive integer be x and x+1A.T.Qx^2+(x+1)^2=365x^2+x^2+2x +1=3652x^2+2x-364=0x^2+x-182=0Let us split middle termX^2+14x-13x-182=0 X(x+14)-13 (x+14)=0(X+14)(X-13)=0X =-14 or X=13Negative root being rejectedHence required number are 13 and 14 13 and 14 |
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| 15697. |
A rational number can be expressed as a terminating decimal if the denominator factors |
| Answer» 2n and 5m | |
| 15698. |
Aditi and shreya u r there |
| Answer» If u see this message plz come our timimg | |
| 15699. |
acos-bsin=cprove that asin+bcos=+_√α²+b²-c² |
| Answer» → a cos∅ + b sin∅ = c .......(1) .\xa0\xa0Now,\xa0→ ( a cos∅ - b sin∅ )² + ( a sin∅ + b cos∅ )² .\xa0= a²cos²∅ + b²sin²∅ - 2a sin∅ b cos∅ + a²cos²∅ + b²sin²∅ + 2a sin∅ b cos∅ .\xa0= a²sin²∅ + a²cos²∅ + b²cos²∅ + b²sin²∅ .\xa0= a²( sin²∅ + cos²∅ ) + b²( cos²∅ + sin²∅ ) .\xa0= a² + b² . [ ∵ sin²∅ + cos²∅ = 1 ] .\xa0\xa0Thus, ( a cos∅ - b sin∅ )² + ( a sin∅ + b cos∅ )² = ( a² + b² ) .\xa0⇒ c² + ( a sin∅ + b cos∅ )² = ( a² + b² ) .\xa0⇒ ( a sin∅ - b cos∅ )² = ( a² + b² - c² ) .\xa0⇒ ( a sin∅ - b cos∅ ) = ±√( a² + b² - c² ) .\xa0Hence,\xa0ORa cosx - b sinx = ca2\xa0cos2x + b2\xa0sin2x - 2ab sinx cosx = c2a2\xa0( 1 - sin2x) + b2\xa0( 1 - cos2x) -\xa02ab sinx cosx = c2a2\xa0- a2\xa0sin2x + b2\xa0- b2\xa0cos2x -\xa02ab sinx cosx = c2-(a2\xa0sin2x + b2\xa0cos2x +\xa02ab sinx cosx) = -a2\xa0- b2\xa0+ c2(a sinx + b cosx)2\xa0= a2\xa0+ b2\xa0- c2asinx + bcosx = +- root(a2+b2-c2) | |
| 15700. |
What is the formula of perimeter of rectangle |
| Answer» 2(l+b) | |