Question

arcsin 1 - arcsin (-1) + arccos 1⁄2 

Answer 1

π/2+π/2+π/3=4π/3
sinπ/2=1⇒arcsin1=π/2
sin(-π/2)=-sinπ/2=-1⇒arcsin(-1)=-π/2
cosπ/3=1/2⇒arccos1/2=π/3

Answer 2

А решение можно?)

Answer 3

Смотри.

Answer 4

огромное спасибо)