Sec x - 2=0
x=?
a. 7pi/6
b. pi/4
c. 5pi/6
d. 5pi/3
e. 7pi/4

We are given the function sec x - 2 = 0 and is asked to solve for x. In this case, we all know that secant is the inverse of cosine. Hence, the expression becomes cos x = 1/2. x then in degrees is equal to 60 degrees. In radians, this is equal to pi/3. cos is also positive in the fourth quadrant which means the answer is d. 5 pi/3. 

Igot the answer of 15.8 years.