## 9.1: Solving Trigonometric Equations with Identities

tan = sin/cos = 1/cot. sin = tan/ sec = 1/ cosec if you put it simply it implies that sin equals divided cosec. cosec = 1/sec = cot/cosec. As with any other subject, it’s all about practice, so make sure to spend even as little as 30 minutes every

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## How to Solve Trig Identities and Tips on Proving Trigonometric

The Pythagorean identities are based on the properties of a right triangle. cos2θ+sin2θ =1 1+tan2θ =sec2θ 1+cot2θ =csc2θ cos 2 θ + sin 2 θ = 1 1 + tan 2 θ = sec 2 θ 1 + cot 2 θ = csc 2 θ

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## Using trigonometric identities (video)

Trig Half-Angle Identities. The half-angle identities are the identities involving functions with half angles. The square root of the first two functions sine and cosine take negative or positive value depending upon the quadrant in which θ

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