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If sin 7theta + sin 4theta + sin theta =...

If `sin 7theta + sin 4theta + sin theta = 0, 0 le theta le pi//2`, then `theta =`

A

`0, (pi)/(2), pi,(3pi)/(5)`

B

`0, (pi)/(3), pi, (2pi)/(3)`

C

`0, (pi)/(4), (pi)/(2), (2pi)/(9)`

D

`1, (pi)/(2), pi, (2pi)/(9)`

Text Solution

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The correct Answer is:
C
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DIPTI PUBLICATION ( AP EAMET)-TRIGONOMETRIC EQUATIONS -EXERCISE 1
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