Mathematics
OpenStudy (anonymous):

Find four solutions of the equation (sinx)^2=1/4 for x between 0 and 360 degrees.

Taking the square root of boths sides of equal sign. $\sin x = +/- 1/2$ x=30 degrees, 150 degrees, 210 degrees, and 330 degrees.

OpenStudy (anonymous):

how did you find x to =30 degrees?