Math, asked by Anmolmehhrok9462, 1 year ago

Evaluate cos square 40 degree plus cos square 50 degree

Answers

Answered by ashwinsai03
1

Answer:

Step-by-step explanation:

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Answered by Potenz
1

Cos^240°+cos^250°=

Cos^240°+cos^2(90°-50°)=

Cos^240°+sin^240°=1

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