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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.
| 3551. |
Cos20cos40cos80=1/8 |
| Answer» use the formula cos3theta\\4 ...it is in d form of cos theta cos 60-theta cos 60+theta | |
| 3552. |
Find genera solution:-Cosec x=1 + cosx |
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Answer» x= nπ + (-1)^n ×π÷2 , x= 2nπ +- π÷2 Cot x** |
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| 3553. |
what are the three numbers in G.P? |
| Answer» ar,a,a/r they have same ratio btween them called as r | |
| 3554. |
If the third term of G.P. is 4 then find the product of its five terms |
| Answer» Answer is 256 | |
| 3555. |
Miscellaneous exercise on chapter 6 qustion .2_ 3x-4_5 |
| Answer» Case 12≤3x-4Add 4 both side6≤3xDivide by 3 both side2≤xCase 23x-4≤5Add 4 both side3x≤9Divide by 3 both sidex≤36≤x≤3 | |
| 3556. |
6chapter ki miscellaneous |
| Answer» Yaar solutions given to hain?? | |
| 3557. |
-3 in polar form. |
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Answer» 3(cos180+isin180) Use the formula-(√a^2 + b^2 ; tan theta) Give two coordinates |
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| 3558. |
What is the meaning of permutation |
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Answer» Arrangement Permutations means arrangement. |
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| 3559. |
Hlo there?? |
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Answer» Ok bye This is not a personal chatting site. Hiii Hiiii Hi |
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| 3560. |
Please give rs aggrawal solutions |
| Answer» google give solution if you want solution than post your doubts here i help you | |
| 3561. |
Formula of t ratios |
| Answer» | |
| 3562. |
Convert degerr into radians 7 30\' |
| Answer» π/24 radian. 7 30\'. = 7 ko nahi 30 ko 60 se divide karo. = 15/2 aa jaye ga =15/2×π/180 | |
| 3563. |
prove by principle of mathe matical induction (costheta+isotasintheta)n=costheta+sinthetannis power |
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| 3564. |
Straight line derive the equation of straight line in slope intercept |
| Answer» | |
| 3565. |
Sec 8 x minus one upon sec 4 x minus 1 equal to tan8 X upon tan 2x |
| Answer» | |
| 3566. |
Under root 2 + under root 2 + 2 cos 4 x is equal to 2 cos x |
| Answer» L.H.S root2+underroot2(1+cos4x)=root2+undreroot2*2cossq2x=root2+2cos2x=root2*(1+cossqx)=root2*2cossqx=2cosx(* it means multiply) we use 1+cossqA=2cossqA in this ques. two times | |
| 3567. |
2 sin square beta + 4 cos (alpha + beta )sin alpha sin beta + cos (2alpha+2beta)=cos2alpha |
| Answer» | |
| 3568. |
Sin theta + sin 2 theta + sin 3 theta +sin 4 theta =0 |
| Answer» | |
| 3569. |
(6+n)P2:(6-2)P2=56:12 |
| Answer» | |
| 3570. |
The angles of a quadrilateral are in a.p. whose common difference is 10 degree . Find the angles . |
| Answer» | |
| 3571. |
1+2+3+........+n |
| Answer» Very easy NCERT question | |
| 3572. |
Lim sinx\\ xX 0 |
| Answer» Fool there answer is 0.9658327 | |
| 3573. |
Find the equation of the line passing through the point (2,4) and perpendicular to the x axis. |
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Answer» x+y=8 y=4 |
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| 3574. |
Find the value of Tanπ/8 |
| Answer» -1± under root 2 | |
| 3575. |
Let a, b be the roots of x^2+(3-z) x-z=0 . Then rhe value of z for which a^2+b^2 is minimum |
| Answer» | |
| 3576. |
if z1=a+ib and z2=c+id then prove that |z1\\z2|=|z1|\\|z2| |
| Answer» | |
| 3577. |
How many number foam taking 4 digit from 1 2 4 3 5 6 whereas digit 4 and 5 cumpulsory |
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Answer» Here 4&5 digit are cumpalsary so we took 1.1.4factorial .3factorial =144 We take take that dot. =multiply Do you know the answer ithink its 4C2×4! |
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| 3578. |
Find the square root of -i |
| Answer» i^3 | |
| 3579. |
How to find solutions of a cubic equation |
| Answer» | |
| 3580. |
Find multiplicative inverse of the complex no. 4 -3i |
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Answer» 4/25+3i/25. 4+3i/5 |
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| 3581. |
Date sheet of september examnation 2018 |
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Answer» 3- account 20-eng22- maths24-eco26-physical edu3-ECO5-B.ST |
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| 3582. |
cosy=xcos(y+a) find dy/dx by differentiation of implicit function |
| Answer» | |
| 3583. |
what is the value sintheta +1/cos theta = |
| Answer» | |
| 3584. |
How to differentiate b/w permutation and combination easily ??????!!? |
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Answer» permutations means arrangements and combination means choose Permutations asks for selection with arrangement whereas combination always asks for selection but not arragement Comb- the given statement ask about pair condition |
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| 3585. |
cos6x=32cos-48cosx+18cosx-1 |
| Answer» Yhgg | |
| 3586. |
|x|+7 is even or odd |
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Answer» Answer is given that even Modulus of x + 7= modulus of x +6+1 so it is odd |
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| 3587. |
Exe. 3.3 |
| Answer» | |
| 3588. |
X+3 ka whole square |
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Answer» X square + 9 + 6 x x^2 +9 +6x Pta ni |
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| 3589. |
2sinx + 3√cosx = 1+ sinx |
| Answer» | |
| 3590. |
The sum of infinity of 1/7+/7^2+1/7^3+........ = |
| Answer» | |
| 3591. |
Hy everyone message me for chats |
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Answer» Hey Hiii Hlo |
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| 3592. |
tan3x |
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Answer» Hy 3 tanx-tan^3x/1-3tan^2x |
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| 3593. |
(1+cosπ/8)(1+cos3π/8)(1+cos5π/8)(1+cos7π/8) |
| Answer» | |
| 3594. |
Sin11AsinA+sin7ASin3A÷cos11AsinA+cos7Asin3A=tan8A |
| Answer» | |
| 3595. |
Prove that:1+sin2θ+cos2θ/1+sin2θ-cosθ=cotθ |
| Answer» | |
| 3596. |
cos20°cos40°cos60°cos80°=1/16. Prove. |
| Answer» | |
| 3597. |
If pth and qth terms of a GP are a and b respectively,find the nth term. |
| Answer» | |
| 3598. |
In class 11 half or full syallabus comes in final exam |
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Answer» Full syllabus Full obviously |
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| 3599. |
Find value of cos 5°+ cos 10°+ cos 15°+ cos 20°+.......+ cos 180° |
| Answer» | |
| 3600. |
Why the value of iota 0 is 1? |
| Answer» Because i^2=-1, so i= + or - 1 when u take square root and not zero | |