1.

cosα+cosβ=a, sinα+sinβ=b and α-β = 2θ. If cos3θcosθ= K, when a=13,b=12Find the value of -36K. __

Answer»

cosα+cosβ=a, sinα+sinβ=b and α-β = 2θ. If cos3θcosθ= K, when a=13,b=12Find the value of

-36K.


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