Question
Solve for x, 0<x<2pi
3sin^2x - sinx -2=0
Its not factorable, do I use quadratic formula?
3sin^2x - sinx -2=0
Its not factorable, do I use quadratic formula?
Answers
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
(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
jake
Quad III and IV?
May I know how you got 3.86132? and value for quad IV?
May I know how you got 3.86132? and value for quad IV?