Question

Prove that: 16 sinx cosx cos2x cos4x cos8x = sin16x​

Answer 1

16sinx cosx cos2x cos4x cos8x

=>8 X 2sinx cosx cos2x cos4x cos8x

=>4 X 2sin2x cos2x cos4x cos8x

=>2 X 2sin4x cos4x cos8x

=>1 X 2sin8x cos8x

=>sin16x

=>RHS

[use the identity sin2x = 2sinx cosx]

Hence Proved.

Hope it helps

Answer 2

Answer:

i hope you understood this answer