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(sin3x+sin x)sin x+(cos3x-cos x)cos x=0

Satinder Chahal

July 18, 2017, 8:56 a.m.

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Davneet Singh

July 18, 2017, 10:01 a.m.

Hi Satinder

Please check Misc 2 of Chapter 3 Class 11 Trigonometry here https://www.teachoo.com/2235/587/Misc-2---Prove-(sin-3x---sin-x)-sin-x---(cos-3x---cos-x)/category/Miscellaneous/

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Satinder Chahal

July 18, 2017, 8:56 a.m.

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