Question

Prove that :- $\rm{cos^2x+cos^2(x+\frac{\pi}{3})+cos^2((x-\frac{\pi}{3})=\frac{3}{2}}$

Answer 1

Step-by-step explanation:

Given,

Cos² x + cos² (x + Π/3) + cos² ( x - Π/3 ) = 3/2

Answer 2

Answer:

above pic is your answer

Step-by-step explanation:

Hope it will help you

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