# Math Help - trig 2

1. ## trig 2

1. Determine sin θ to 3 decimal places if cos θ = 1/2 and θ is an angle in quadrant IV

2. Originally Posted by william
1. Determine sin θ to 3 decimal places if cos θ = 1/2 and θ is an angle in quadrant IV
Hi William,

$\cos \theta =\frac{1}{2}$ in the 4th quadrant should corresponding to a special angel. What is it?

If you can find that angle, you should be able to figure out $\sin \theta$.