Question

use the unit circle to find the inverse function value degrees.
cos^-1(sqrt2/2)

Answer 1

You should ask this question in pre calc you might get a better answer

Answer 2

is ther a pre calc section?

Answer 3

is there more information ?

Answer 4

CAST rule
given cos value is positive so its either in first or 4th quadrant

Answer 5

ther is sorry. 2 sin theta cos theta+cos theta=0 @Nnesha

Answer 6

as nnesha said, it's either in the 1st or 4th quadrant
http://upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Unit_circle_angles_color.svg/1024px-Unit_circle_angles_color.svg.png reference this

Answer 7

yay awesome thanks

Answer 8

\[\huge\rm 2sin \theta \cos \theta + \cos \theta = 0\]
take out common factor
set it equal to 0
solve for cos and sin