If cos(alpha - beta) + cos(beta - gamma)...

If `cos(alpha - beta) + cos(beta - gamma)+ cos(gamma-alpha)=-3/2`, then

`sum cos alpha =0`

`sum sin alpha = 0`

`sum (cos alpha +sin alpha)=0`

`sum cos alpha sin alpha = 0`

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A, B, C

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AAKASH SERIES-COMPOUND ANGLES-LECTURE SHEET (EXERCISE - I)

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