posted by Shane on .
Please help me.Iam stuck. Find all the possible values of theta between 0 degree and 360 degree for the following quadratic equation. State the quadrants in which each angle lie. 8 tan^2 theta + 2 tan theta=15
8tan^2 + 2tan - 15 = 0
(4tan-5)(2tan+3) = 0
so tanθ = 5/4 or -3/2
in QI,QIII and QII,QIV respectively