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If sin 3 alpha =4 sin alpha sin (x+alph...

If ` sin 3 alpha =4 sin alpha sin (x+alpha ) sin(x-alpha ) `, then

A

`n pi pm pi/6`

B

`n pi pm pi/3`

C

`npi pm pi/4`

D

`n pi pm pi/2`

Text Solution

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The correct Answer is:
B
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ML KHANNA-TRIGONOMETRICAL EQUATIONS -PROBLEM SET (2) (MULTIPICE CHOICE QUESTIONS)
  1. The most general value of theta which satisfies both the equation in ...

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  2. General solution of the equation tan theta + tan 4 theta + tan 7 the...

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  3. If sin 3 alpha =4 sin alpha sin (x+alpha ) sin(x-alpha ) , then

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  4. If tan3theta=cottheta, then general value of theta is :

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  5. If tan 5 theta = cot 3 theta, then theta =

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  6. If "tan" 2 theta "tan" theta =1, "then" theta =

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  7. If sqrt 3 sin theta - cos theta = sqrt2, then theta=

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  8. If tan theta + sec theta = sqrt3, 0 lt theta le pi, then theta =

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  9. If tan theta + sec theta = sqrt3, 0 lt theta le pi, then theta =

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  10. If sin x +cos x =1, then x =

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  11. If sin^3 x + sin x cos x + cos^3 x = 1, then x =

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  12. If csc x = 1 + cot x, then x =

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  13. If sqrt3cos theta + sin theta = 1 " for " -2pi lt theta lt 2pi, then t...

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  14. General solution of the equation (sqrt(3) - 1) sin theta + (sqrt(3) ...

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  15. If max{5sintheta +3sin(theta -alpha)} = 7, then the set of possible va...

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  16. If tan((pi)/(2) sin theta )= cot((pi)/(2) cos theta ), then sin thet...

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  17. If : sin ((pi)/4 cdot cot theta) = cos ((pi)/4 cdot tan theta), then :...

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  18. If tan theta + tan (theta + pi/3) + tan ( theta + (2pi)/3) = 3, then ...

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  19. Solve cot(x//2)-cosec (x//2)=cot x.

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  20. If cot theta - tan theta = sec theta, then theta=

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