ajcurl22 ajcurl22

22-03-2020
Mathematics

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Prove sin^2A + cos^2A = 1

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Hrishii Hrishii

22-03-2020

Step-by-step explanation:

[tex] {sin}^{2} A + {cos}^{2} A = 1 \\ lhs = {sin}^{2} A + {cos}^{2} A \\ = {sin}^{2} A + 1 - {sin}^{2} A \\ = 1 \\ = rhs \\ \therefore \: {sin}^{2} A + {cos}^{2} A = 1 \\ [/tex]

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