Hello Ashutosh,
Do you want the answer of Miscellaneous 5? Please check https://www.teachoo.com/2238/587/Misc-5---Prove-sin-x---sin-3x---sin5x---sin-7x-=-4-cos-x/category/Miscellaneous/
Or press next in Misc 4.
Written on Aug. 25, 2017, 6:16 p.m.