Question
What is the smallest positive value of x that satisfies x= Arc cos 1/2
Answers
coolguy321
(x+5)=3
x=3-5
x=-2
x=3-5
x=-2
Reiny
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
then x = π/3
check:
on your calculator, (set at degrees)
2ndF
cos
.5
=
to get 60° which is π/3 radians
coolguy123
yea