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The value of 4 sin A cos ^(3) A-4 cos A ...

The value of `4 sin A cos ^(3) A-4 cos A sin ^(3)A`

A

`cos 2 A`

B

`sin 3 A`

C

`sin 2 A`

D

`sin 4A`

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  10. If tan theta+sec theta=sqrt(3), 0 lt theta lt pi then theta=

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