in the interval 90<x<180, find the value of x that satisfies the equation 2 sin x - 1=0
+4 2 sin x = 1 add 1 to both sides
sin x = 1/2 divide both sides by 2
x = 150 use a calculator to solve
+4 2 sin x = 1 add 1 to both sides
sin x = 1/2 divide both sides by 2
x = 150 use a calculator to solve
