Question

prove it
urgent!
step by step explanation​

Answer 1

Answer:

Step by Step

RHS:

• sin 4x.sin 8x

$sin a.sinb = \frac{1}{2} (cos(a - b) - cos(a + b))$

With this the above equation becomes

• $\frac{1}{2}( \cos(4x) - \cos(12x)$
• $\cos(2x) = 2 ( { \cos(x) }^{2} - 1)$

after simplyfying this we get LHS

Answer 2

Answer:

here is the explanation to the given question