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

solve using identities for all angles (dont use multiple angle method)show work please cuz i am so confused.

2sin2x-3sinx=0

- pre-calc HELP PLEASE -
**Steve**, Wednesday, April 25, 2012 at 10:31am
dunno 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

- math - 2. Simplify. Please be sure to show all of your work. -3(-9) – |-5 – 3 3...
- Pre-Calc - Can you show me how to find the rectangular equation of r=2costheta...
- 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 ...
- Algebra 2 URGENT - Solve the equation using the method that seems easiest. ...
- Pre-Calc/Math - Use factoring, the quadratic formula, or identities to solve cos...
- math ergent please... - 10.a)Solve the inequality x^3-5x^2+2x+8<0 by i) using...
- pre-calc - cos x+sec x=2 if you could please show all work
- geometry A please help - given <A compl to <B <C is compl to <B <...

More Related Questions