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Assertion (A) : (Costheta+iSintheta)^(10)+(Costheta-iSintheta)^(10)=2cos10thetaReason (R) : (1+costheta+isintheta)^n+(1+costheta-isintheta)^n=2^(n+1)cos^n(theta/2)cos((ntheta)/(2)) |
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Answer» A) Both A and R are TRUE R is CORRECT explanation to A |
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