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cot12^(@)*cot 24^(@)*cot28^(@)*cot32^(@)...

`cot12^(@)*cot 24^(@)*cot28^(@)*cot32^(@)*cot48^(@)*cot88^(@)=……..`

A

`tan45^(@)`

B

2

C

`2 tan 15^(@)*tan45^(@)*tan75^(@)`

D

`tan15^(@)*tan45^(@)*tan75^(@)`

Text Solution

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The correct Answer is:
A, D
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VK JAISWAL ENGLISH-COMPOUND ANGLES-Exercise-2 : One or More than One Answer is/are Correct
  1. cot12^(@)*cot 24^(@)*cot28^(@)*cot32^(@)*cot48^(@)*cot88^(@)=……..

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  2. If the equation cot^4x-2cos e c^2x+a^2=0 has at least one solution, th...

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  3. Which of the following is/are true ?

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  4. Which of the following is/are true ?

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  5. If sin alpha +cos alpha =(sqrt(3)+1)/(2), 0 lt alpha lt 2pi, then poss...

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  6. If 3 sin beta= sin( 2alpha+beta), then

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  7. If sin(x+20^0)=2sinxcos40^0,w h r ex in (0,pi/2), then which of the fo...

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  8. If cosx + cosy + cosz = 0 and sinx + siny + sinz =0, then show that ...

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  9. If 0 lt x lt pi/2 and sin^(n) x + cos^(n) x ge 1, then

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  10. If x=sin(alpha-beta)*sin(gamma-delta), y=sin(beta-gamma)*sin(alpha-de...

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  11. If X=x cos theta-y sin theta, Y=x sin theta+y cos theta and X^(2)+4XY...

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  12. If 2a=2tan10^(@)+tan50^(@), 2b=tan20^(@)+tan50^(@) 2c=2tan10^(@)+tan...

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  13. Which of the following real numbers when simplified are neither termi...

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  14. If alpha=sin x cos^(3) x and beta=cos x sin^(3) x, then :

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  15. If (pi)/(2) lt theta lt pi, then possible answers of sqrt(2+sqrt(2+2c...

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  16. If cot^(3)alpha+cot^(2)alpha+cot alpha=1 then which of the following...

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  17. The value of x in (0,pi/2) satisfying (sqrt(3)-1)/(sinx)+(sqrt(3)+1)/(...

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  18. If alpha gt (1)/(sin^(6)x+cos^(6)x) AA x in R, then alpha can be

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  19. If x in (0, (pi)/(2)) and sinx=(3)/(sqrt(10)), Let k=log(10)sinx+log...

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  20. If A, B, C are angles of a triangle ABC and tanAtanC=3, tan B tanC=6 t...

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