6.2 Trigonometric Functions: Unit Circle Approach/113

$f(x)=\sin(x)$
$g(x)=\cos(x)$
$h(x)=2x$
$p(x)={\frac {x}{2}}$

Failed to parse (syntax error): {\displaystyle (p\circ g)(315^{\circ})= \frac{{cos(315^{\circ}}{2} }