Mathematics, 31.12.2020 14:00 sydc1215

Prove that sin²α + cos²α = 1 and $\frac{1}{cos^{2}\alpha }$ = 1 + tan²α

Prove that sin²α + cos²α = 1 and = 1 + tan²α

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Prove that sin²α + cos²α = 1 and = 1 + tan²α
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