If 15x=180 ,prove that cos x cos 2x cos 3x cos 4x cos 5x cos6x cos7x=1/2^7 - Maths - Trigonometry

Question

If 15x=180?,prove that cos x cos 2x cos 3x cos 4x cos 5x cos6x
cos7x=1/2^7

Ananya Srivastava · Answer

this is difficult question according to ur standard
sorry i can't help u wid this :(

If 15x=180?,prove that cos x cos 2x cos 3x cos 4x cos 5x cos6x cos7x=1/2^7