If sin2theta=cos3thetaa n dtheta is an a...

If `sin2theta=cos3thetaa n dtheta` is an acute angle, then `sintheta` equal `(sqrt(5)-1)/4` (b) `-((sqrt(5)-1)/4)` `(sqrt(5)+1)/4` (d) `(-sqrt(5)-1)/4`

`(sqrt5-1)/(4)`

`-((sqrt5-1)/(4))`

`(sqrt5+1)/(4)`

`(-sqrt5-1)/(4)`

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