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Question : how to prove Pythagorean Identities? Solution :There are three Pythagorean Identitiessin²𝜃 + cos²𝜃 = 1 1+ tan²𝜃 = sec²𝜃 1+ cot²𝜃 = csc² 𝜃Proof : Let a right triangle on the XY plane is constructed as followsTo prove sin²𝜃…
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