$csc^2x\:=\:2.5$
$-9\:x\:7$
$x^2+y^2+x=0$
$\frac{\frac{\cos\left(90+a\right)}{\sin\left(90+a\right)}}{-2\sin\left(a\right)^2}=\csc\left(2a\right)$
$\left(10x^2+32x-45\right)-\left(x^3+4x^2\right)$
$23.45+12.32$
$\int\sec^3\left(2x\right)\tan\left(2x\right)dx$
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