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Geometry

Pythagorean Identities

Basic Proving Identities using Pythagorean Theorem

         

Which of the following is equal to \(1-\cos^2\theta?\)

Which of the following is equal to \(1-\sin^2\theta?\)

Which of the following is equal to \((1-\cos\theta)(1+\cos\theta)?\)

Which of the following is equal to \((\sin\theta-1)(\sin\theta+1)?\)

Which of the following is equal to \(\dfrac{\sec^2\theta}{\tan^2\theta+1}?\)

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