If - - are supplementary angles- then sin2 - - cos2 - -

Α, β are supplementary angles, i.e. α + β = 180^∘ ∴ sin^2 α + cos^2 β = sin^2 α + cos^2 (180^∘ α) = sin^2 α + cos^2 α = 1 ...

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Basic Trigonometric Identities

If α, β are s...

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If $α, β$ are supplementary angles, then ${sin}^{2} α + {cos}^{2} β$ =

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