how to prove Pythagorean Identities

Question :  how to prove Pythagorean Identities?  Solution : There are three Pythagorean Identities sin²𝜃 + cos²𝜃 = 1  1+ tan²𝜃 = sec²𝜃 1+ cot²𝜃 = csc² 𝜃 Proof : Let a right triangle on the XY plane is constructed…

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