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If sin 2 theta=cos 3 theta and theta is ...

If `sin 2 theta=cos 3 theta` and `theta` is an acute angle then `sin theta=`

A

`(sqrt(5)-1)/(4)`

B

`-((sqrt(5)-1)/(4))`

C

`(sqrt(5)+1)/(4)`

D

`-(sqrt(5)-1)/(4)`

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HIMALAYA PUBLICATION-MEASUREMENT OF ANGLES, TRIGONOMETRIC RATIOS AND RELATION BETWEEN SIDES AND ANGLES OF A TRIANGLE-QUESTION BANK
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