Asked by jake

Solve for x, 0<x<2pi

3sin^2x - sinx -2=0

Its not factorable, do I use quadratic formula?
Answered by Reiny
yes, it does factor....
(3sinx + 2)(sinx - 1) = 0

sinx = -2/3 or sinx = 1

if sinx=-2/3, x is in II or III
x = 2.411865 or x = 3.87132

if sinx=1
x = π/2
Answered by jake
Quad III and IV?


May I know how you got 3.86132? and value for quad IV?

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