Question

Solve cos(theta) ≥ sqrt(3)/2 for 0 ≤ theta ≤ 2pi

Answer 1

first try to solve \[\cos (\theta)=\frac{\sqrt{3}}{2}\]

Answer 2

for \[0\le \theta \le 2\pi ~~\text{what values of } \theta~~ \text{give us} \frac{\sqrt{3}}{2}\]

Answer 3

Solve for theta? I'm not sure what to do

Answer 4

You don't know your special angles?
Hmm that makes this a little more difficult..

Answer 5

Cosine corresponds to your x-coordinate.

Answer 6

So we're looking for x-coordinate of sqrt(3)/2

Answer 7

Looks like that's at these two locations, ya?

Answer 8

This is going to be a little tricky...

Answer 9

I was saying that `cosine corresponds to the x-coordinate`.
Lemme draw that on the a-xis a sec.
Cause we have to travel some distance in the x-direction to get to our point.