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if alpha and beta are root of acosø+bsinø=c show that cos(alpha+beta)=a^2-b^2÷a^2+b^2

if alpha and beta are root of acosø+bsinø=c show that cos(alpha+beta)=a^2-b^2÷a^2+b^2

Grade:11

1 Answers

Deepak Kumar Shringi
askIITians Faculty 4407 Points
4 years ago
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