crazygal92675
crazygal92675
19-04-2017
Mathematics
contestada
simplify the following cos(-x)tanx
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jdoe0001
jdoe0001
19-04-2017
[tex]\bf \textit{symmetry identites}\\\\ cos(-\theta)=cos(\theta)\\\\ -----------------------------\\\\ cos(-x)tan(x)\implies cos(-x)\cdot \cfrac{sin(x)}{cos(x)}\\\\\\ cos(x)\cdot \cfrac{sin(x)}{cos(x)}\implies sin(x)[/tex]
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