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Additional Math – Trigonometry – Prove Identities involving Cot A and TanA

By |2020-02-01T22:04:34+08:00February 1st, 2020|A-Math - Trigonometry|

$latex \displaystyle \ \frac{{\cot A-\tan A}}{{\cot A+\tan A}}$ $latex \displaystyle (\cot A-\tan A)\div (\cot A+\tan A)$ Change tan A  to [...]