$sin\left(\frac{37\pi}{42}\right)cos\left(\frac{5\pi}{7}\right)-cos\left(\frac{37\pi}{42}\right)sin\left(\frac{5\pi}{7}\right)$

$-100+56+79+\left(-50\right)+\left(-20\right)$

$\frac{2\sec\left(x\right)-3\tan\left(x\right)+1}{2\csc\left(x\right)+\cot\left(x\right)-3}$

$5x+4-2$

$\int\frac{1}{5x^{6}}dx$

$\frac{3x^3+6x^2-10x+2}{x+1}$

$\cot\left(v\right)-\tan\left(v\right)=2\cot\left(2v\right)$