Monday, 10 October 2011

Chapter 4.5(Prove Trigonometry Identities)


Pythagorean Identity
\cos^2\theta + \sin^2\theta = 1\!

Quotient Identities
\tan\theta = \frac{\sin\theta}{\cos\theta}.

Reciprocal Identities
\sec\theta = \frac{1}{\cos\theta},\quad\csc\theta = \frac{1}{\sin\theta},\quad\cot\theta=\frac{1}{\tan\theta}=\frac{\cos\theta}{\sin\theta}.


The last part of the chapter, proving trigonometry identities. above is some new formulas that quite useful for you to use as you are working on proving.
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