Cos2x+Cos2[x+π/3]+Cos2[x-x/3]= 3/2

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Maths

This question was asked in Misc 4

Cos ² x+Cos ² [x+π/3]+Cos ² [x-x/3]= 3/2

Harsh Sharma

Sept. 24, 2017, 11:39 p.m.

Answers!

Davneet Singh

Sept. 26, 2017, 11:22 a.m.

Hello Harsh,

Please check https://www.teachoo.com/2233/586/Example-29---Prove-cos2-x---cos2-(x---pi-3)---cos2-(x---pi-3)/category/Examples/

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