sin, cosine, and tangent4

label Mathematics
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  1. Find the sine of 225°.


Oct 21st, 2014

sin 225=sin(180+45)  as sin(180+A)=-sinA

=-sin45=-1/√2=-0.707

Oct 21st, 2014

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Oct 21st, 2014
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Oct 21st, 2014
Jun 24th, 2017
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