Question

sec x - 2=0
x=?

a. 7pi/6
b. pi/4
c. 5pi/6
d. 5pi/3
e. 7pi/4

Answer 1

\[secx = 2\]\[\frac{1}{cosx}=2\]\[1 = 2cosx\]\[\frac{1}{2} = cosx\]
So what value(s) of x would make cosx be 1/2?

Answer 2

5pi/3

Answer 3

and pi/3. but that is not an option. i see now!