Posted by LiNnda on Monday, May 3, 2010 at 10:54am.
2(1 - sin^2x) - 3sinx = 0
-2sin^2x - 3sinx + 2 = 0
2sin^2x + 3sinx - 2 = 0
(2sinx -1)(sinx + 2) = 0
sinx = 1/2 or sinx = -2
x = 30° or 150° or (sinx = -2 has no solution)
x = 30 or 150 ° which is also π/6 or 5π/6 radians
Related Questions
trig - find the exact solutions 2cos^2x+3sinx=0 the way it stands, that is a &...
Math - Solving Trig Equations - Solve each equation for 0 is less than and equal...
trig - how can i find all the exact solutions to the equation : 2cos^2x + 3sinx...
Math - Solving for Trig Equations - Solve the following equation for 0 less than...
Math - Solving Trig Equations - What am I doing wrong? Equation: sin2x = 2cos2x ...
Trigonometry - Prove that (3cos^2x + 8sinx-8/cos^2x) = (3sinx-5/sinx+1)
Math - Trig - Double Angles - Prove: cos4x = 8cos^4x - 8cos^2x + 1 My Attempt: ...
trig - solve the equation 2sin^2X - 3sinX= -1
math - the problem is 2cos^2x + sinx-1=0 the directions are to "use an ...
trig - Help find the general solution to:sin^2x-3cosx+sinxcosx-3sinx=0
For Further Reading
