Why Does sin^2+cos^2=1? | Trigonometry

Proof: sin^2 + cos^2 = 1

Why does sine squared plus cosine squared equal 1?

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Why sin^2+cos^2=1?

PreCalculus - Trigonometry: Trig Identities (30 of 57) Proof sin^2(x)=(1-cos2x)/2

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sin2 + cos2=1

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PreCalculus - Trigonometry: Trig Identities (31 of 57) Proof cos^2(x)=(1+cos2x)/2

Sin2+Cos2=1 proof

Proof of cos2x=(cosx)^2-(sinx)^2=2(cosx)^2 1=1-2(sinx)^2

Trigonometry Identity: Proof that sin^2(x) + cos^2(x) = 1

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Prove that sin²A + cos²A = 1 | One of the most important identities of Trigonometry | Mathematics

sin^2(x) + cos^2(x) = 1 Trig Identity Graphical Proof

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Proof that sin^2 + cos^2 = 1 (1^2)