How to find secant on unit circle

The Secant and the Unit Circle. Author: Chris Wells. Topic: Circle, Trigonometry, Unit Circle. The applet uses the unit circle to demonstrate how the relationship between sine, cosine and

Calculus
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Learn how to evaluate secant for an angle on the unit circle

Starting with the Pythagorean identity, sin 2 θ + cos 2 θ = 1, you can derive tangent and secant Pythagorean identities. All you do is throw in a little algebra and apply the