Math, asked by lucifer200431, 1 year ago

find the principal solution of the equation 2cossquaretheta=1

Answers

Answered by hafizur0210

1

Soln :

2Cos²A=1

»Cos²A=1/2

»Cos²A=Cos60° [ Sins, Cos60°=1/2]

»CosA=60°

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