Wednesday

September 17, 2014

September 17, 2014

Posted by **Manny** on Monday, April 28, 2008 at 6:00pm.

cosx - 2cos^2x = 0

- trig -
**Reiny**, Monday, April 28, 2008 at 7:31pmcosx(1 - 2cosx)=0

cosx=0 or cosx=1/2

x = pi/2, 3pi/2, pi/3, 5pi/3 (90,270,60,300º)

**Answer this Question**

**Related Questions**

trig - Find two standard position primary angles in radians by solving for the ...

pre-calc - How do you find coterminal angles between 0 and 2pi for angles given ...

Per-calc Helppppp - keep in mind answers should be pi radians or if necessary 3 ...

geometry - Two angles of a quadrilateral measure 210° and 100°. The other two ...

Math - Two parallel lines cut by a transversal can create all the following ...

vertex angle - The three angles add to 180 degrees. Also , the two base angles ...

geometry - Angles 1 and 7 are alternate exterior angles of a transversal cutting...

Maths 11th Grade - The difference between the two acute angles of a right-angled...

math - a quadrilateral has two angles that measure 88 and 62. the other two ...

eakin elementary - If the 80o angle is in standard position, find two positive ...