Question

найдите значение выражения. arctg(-1)+arcsin(1/2)+arccos(-1/2)

Answer 1

$arctg(-1)=-frac{pi}{4}\arcsin(frac{1}{2})=frac{pi}{6}\arccos(-frac{1}{2})=frac{2pi}{3}\-frac{pi}{4}^{(3}+frac{pi}{6}^{(2}+frac{2pi}{3}^{(4}=frac{-3pi+2pi+8pi}{12}=frac{7pi}{12}$