Trig2.2

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Find the value of \tan [\frac{\pi}{4}+A]\,

\tan (\frac{\pi}{4}+A)=\frac{\tan (\frac{\pi}{4})+\tan A}{1-\tan (\frac{\pi}{4}) \tan A}\,

\frac{1+\tan A}{1-\tan A}=\frac{1+\frac{\sin A}{\cos A}}{1-\frac{\sin A}{\cos A}}\,

\frac{\cos A+\sin A}{\cos A-\sin A}\,

Main Page:Trigonometry

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