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Sin2 80° + cos2 80° without calculator
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3 votes
Sin2 80° + cos2 80° without calculator

User Inperspective
by
7.4k points

1 Answer

5 votes

Answer:

1

Explanation:

Because of the Pythagorean Identity
\sin^2\theta+\cos^2\theta=1, then the answer is simply 1 as the angle does not matter.

User SteppingHat
by
7.6k points
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