1) 2arccos0+3arccos 1= 2) 3 arccos (-1) -2 arccos 0=

Question

1) 2arccos0+3arccos 1=

2) 3 arccos (-1) -2 arccos 0=

Answer 1

1.2arccos0+3arccos 1=2*пи/2 + 3 * 0=пи

2.3 arccos (-1) -2 arccos 0= 3 * пи - 2 *пи/2 = 2 пи