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If cosptheta=cosqtheta, pneq, then...

If `cosptheta=cosqtheta, pneq,` then

A

`theta=2npi`

B

`theta=(2npi)/(ppmq)`

C

`theta=(npi)/(p+q)`

D

none of these

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The correct Answer is:
B
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TARGET PUBLICATION-TRIGONOMETRIC FUNCTIONS -Competitive Thinking
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  10. sinx+sin3x+sin5x=0

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  11. The number of solutions of the equation sinx-sin2x+sin3x=2cos^(2)x-cos...

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  12. The value of x in (0,(pi)/(2)) satisfying the equation sin x cos x =(1...

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  13. If sintheta= costheta=1, then find the general value of theta.

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  14. sqrt(2)sectheta+tantheta=1

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  15. sqrt(3)costheta+sintheta=2

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  16. sin6theta+sin4theta+sin2theta=0,"then "theta=

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