Question

срочно 15 баллов!срочно

Answer 1

$5, arccos, frac{1}{2}-4, arcsin(-frac{sqrt3}{2})-arcctgsqrt3=5cdot frac{pi}{3} +4cdot frac{pi }{3}-frac{pi }{6}=\\=frac{10pi +8pi -pi }{6}=frac{17pi }{6}$