SOLUTION: How do you find the exact values of cos^-1(-1/2)? a. π/2 b. π/3 c. 3π/2 d. 0 e. 2π/3

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: How do you find the exact values of cos^-1(-1/2)? a. π/2 b. π/3 c. 3π/2 d. 0 e. 2π/3      Log On


   

Question 1170367: How do you find the exact values of cos^-1(-1/2)?
a. π/2
b. π/3
c. 3π/2
d. 0
e. 2π/3
Answer by Solver92311(821) About Me  (Show Source):
You can put this solution on YOUR website!


is the same as and means "the angle whose cosine is .

Find the points on the unit circle that have an -coordinate of and read the angles.



John

My calculator said it, I believe it, that settles it

From
I > Ø