## Calculus 8th Edition

$x= 57.48877$ cm
Since, adj =22 cm and hyp = x Thus, $cos\theta=\frac{adj}{hyp}$ $cos(\frac{3\pi}{8})=\frac{22}{x }$ Need to solve $x$. $x=\frac{22}{cos(\frac{3\pi}{8})}$ Hence, $x= 57.48877$ cm