What is ${csc}^{2} θ$ $csc^2theta$ in terms of non-exponential trigonometric functions?

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Answer 1 · 2016-06-22T16:23:03

$\frac{2}{1 - cos 2 x}$ $2/(1-cos2x)$

${csc}^{2} x = \frac{1}{{sin}^{2} x} = \frac{2}{2 {sin}^{2} x} = \frac{2}{1 - cos 2 x}$ $csc^2x=1/sin^2x=2/(2sin^2x)=2/(1-cos2x)$

What is csc2θcsc^2theta in terms of non-exponential trigonometric functions?