Hi,

Solve each equation for 0 less than or equal to theta less than 360

cosθ = -1/2    θ is  120°, 240°

See below the (cosx, sinx) summary

 

RELATED QUESTIONS

Solve for theta (0 degrees less than or equal to theta<360 degrees)

cos theta=... (answered by tommyt3rd)

Solve each equation for theta if theta is greater than or equal to 0 degrees and less... (answered by stanbon)

solve
 sin(theta)cos(theta)−sin(theta)−cos(theta)+1=0

 also 
this one... (answered by lwsshak3)

solve for all values of theta in the interval 0 less than or equal to theta less than or... (answered by stanbon)

what is the solution set for 2 cos theta -1=0 in the interval 0 degrees equal to or less... (answered by solver91311,Cromlix)

find all solutions for the given interval o degrees less than or equal to theta less than  (answered by lwsshak3)

Solve 6cos theta -3 square root 2 =0, for 0 degrees is less than or equal to theta is... (answered by stanbon)

if 2 cos (theta) = cot (theta) and 0 less than or equal to (theta) less than 2 pi, then... (answered by lwsshak3)

Solve the equation. 0 is less than or equal to theta and theta is less than 2 pi.
-4 +... (answered by lwsshak3)