Math, asked by Hardhur7873, 10 months ago

Cos^2(90+alfa)+cos^2(180-alfa)

Answers

Answered by hridayvana999

9

Answer:

ans is -1

Step-by-step explanation:

cos^2(90+alfa)+cos^2(180-alfa)

-sin^2(alfa)-cos^2(alfa)

-[sin^2(alfa)+cos^2(alfa)]

-(1)

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