Wednesday

April 16, 2014

April 16, 2014

Posted by **sol** on Sunday, March 28, 2010 at 10:33pm.

2sin^2X - 3sinX= -1

- trig -
**Reiny**, Sunday, March 28, 2010 at 10:36pm2 sin^2 x - 3sinx + 1 = 0

(2sinx - 1)(sinx -1) = 0

sinx = 1/2 or sinx = 1

x = 30 degrees or 150 degrees or x = 90 degrees

in radians x = π/6, 5π/6, π/2

**Related Questions**

Math - Solving Trig Equations - Solve each equation for 0 is less than and equal...

trig - find the exact solutions 2cos^2x+3sinx=0 the way it stands, that is a "...

trig - What is the shift along x of the following trig functions? y = (3sinx/2...

Math - Trig - Double Angles - Prove: sin2x / 1 - cos2x = cotx My Attempt: LS: = ...

Trig - Solve the equation 2sin(2x) = cos x. and Solve the equation cos^2(2x)–...

math - the problem is 2cos^2x + sinx-1=0 the directions are to "use an identity ...

help, bobpursely - Please take a look at DEVON's trig equation at 9:14 I must be...

math - 2sin^2x+3sinx+1

Math - Solve each equation for 0≤x<2π 1. (cosX)(cosX+1)=0 2. 2sin^...

trig - 2sin(x)cos(x)+cos(x)=0 I'm looking for exact value solutions in [0, 3&#...