Proofs Videos

Tips on Simplifying a Geometrical Proof

Geometric Proof of the Pythagorean Theorem

Proofs involving Line Segments Tutorial

How to Prove the Equation of a Circle

Proving the Point Slope Equation

Trigonometry: Identities & Proof Examples

Proof: cos(a+b) = (cos a)(cos b)-(sin a)(sin b)

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