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2015-09-04T00:13:24+08:00

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These are mnemonic so you can remember the formula of Trigonometric Ratio


COSHO:
Cosecant = hypotenuse
                    opposite

SECHA
Secant =  hypotenuse
                   adjacent

COTAO
Cotangent = adjacent
                       opposite
0
meaning of SOH CAH TOA
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