Geometry

Proving Trigonometric Identities

Advanced Proving Identities using Pythagorean

         

Simplify

sinθcos2θsinθ. \sin \theta \cos ^2 \theta - \sin \theta .

Simplify

1sin2θ+1cos2θ.\displaystyle \frac{1}{\sin^2 \theta}+\frac{1}{\cos^2 \theta}.

Simplify

tan2θtan2θ+1. \frac{ \tan ^2 \theta } { \tan ^2 \theta + 1 } .

Which of the following is equal to the above expression?

Simplify

cos4θ+sin2θcos2θ. \cos ^4 \theta + \sin^2 \theta \cos^2 \theta.

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