Friday

November 28, 2014

November 28, 2014

Posted by **Janie** on Sunday, January 24, 2010 at 7:04pm.

- Trig -
**Damon**, Sunday, January 24, 2010 at 7:12pmcos B (2 cos B - 1 )=0

cos B = 0 is one solution. That is at pi/2 and 3pi/2

cos B = 1/2 is also a solution

that is at 60 degrees and -60 degrees which is at pi/3 and 5 pi/3

- Trig -
**Janie**, Sunday, January 24, 2010 at 7:35pmI thought cos=1/2 at 30, not 60

**Answer this Question**

**Related Questions**

Trig. - Can someone please help me with this? Find all solutions to the equation...

Pre-Calculus - Find all solutions to the equation in the interval [0, 2pi) cos4x...

trig - how can i find all the exact solutions to the equation : 2cos^2x + 3sinx...

trig - Find all solutions to the equation 2cos(2x) = x + 1, correct to 4 ...

Math (Calc) - Find all solutions to the following equation on the interval 0<...

Precalculus - Please help!!!!!!!!!!! Find all solutions to the equation in the ...

trig - Find ALL solutions to the equation on the interval [0, 2pie]: 2sin(1/2X...

trig - Find the solutions to the equation cos2x=sinx and 2cos^2x-3cosx-3=0

Physics Important please - A yo-yo of mass m rests on the floor (the static ...

Physics Important please - A yo-yo of mass m rests on the floor (the static ...