Question

FIND THE VALUE OF 8 SIN 2X COS 4X SIN 6X,WHEN X=15°

Answer 1

Answer: 2

Step-by-step explanation:

Sin 2x = Sin(2*15) = Sin 30 = 1/2

Cos 4x = Cos(4*15) = Cos 60 = 1/2

Sin 6x = Sin(6*15) = Sin 90 = 1

Thus , 8 Sin2X Cos4X Sin6X ( When X = 15 )

= 8 * 1/2 * 1/2 * 1 = 8 * 1/4 = 2