If sin2theta=cos3theta and theta is an a...

If `sin2theta=cos3theta` and `theta` is an acute angle, then `sintheta` equal

A

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

B

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

C

(c) 0

D

(d) none of these

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The correct Answer is:

A

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