What is the smallest positive value of x that satisfies x= Arc cos 1/2

Answer 1

(x+5)=3
x=3-5
x=-2

Answer 2

x= Arc cos 1/2 <-----> cosx = 1/2
then x = π/3

check:
on your calculator, (set at degrees)

2ndF
cos
.5
=

to get 60° which is π/3 radians

Answer 3

yea