Monday

December 22, 2014

December 22, 2014

Posted by **Kimberly** on Tuesday, April 24, 2012 at 7:01pm.

2sin2x-3sinx=0

- pre-calc HELP PLEASE -
**Steve**, Wednesday, April 25, 2012 at 10:31amdunno what you mean by "dont use multiple angle method" since

sin2x = 2 sinx cosx

4sinx cosx - 3sinx = 0

sinx(4cosx - 3) = 0

sinx = 0, so x = 0,180,360,...

cosx = 3/4, so x = 41.4,318.6,...

**Answer this Question**

**Related Questions**

Pre-Calc - Can you show me how to find the rectangular equation of r=2costheta...

math - 2. Simplify. Please be sure to show all of your work. -3(-9) – |-5 – 3 3...

Algebra 2 URGENT - Solve the problem using the "z" method. Please Show All Work...

Intermediate Algebra - Solve using elimination method. If the system has no ...

Math - Algebra - A. Solve the following quadratic equations. Make sure to show ...

Pre-Calc/Math - Use factoring, the quadratic formula, or identities to solve cos...

Algebra 2 URGENT - Solve the equation using the method that seems easiest. ...

pre-calc - cos x+sec x=2 if you could please show all work

math ergent please... - 10.a)Solve the inequality x^3-5x^2+2x+8<0 by i) using...

geometry A please help - given <A compl to <B <C is compl to <B <...