Question

Findthe value of 8sin2x.cos 4x.sin 6x, when x= 15°

Answer 1

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Answer 2

8sin2x is= 8sin30°=8×1/2=4•
cos4x=cos4×15°=cos60°=1/2•
sin6x=sin90°=1
=4×1/2×1=2