Recall that sin^2 + cos^2 = 1 and that sin(x) >= 0 as well as cos(x) >= 0 in first quadrant.
Find the remaining trigonometric functions of
if and terminates in quadrant 1.
We are given: .
Hence, is in a right triangle with:
Pythagorus: .Code:* * * 2 * * * * x * θ * * * * _ * * * √3
. . . . . . . . . .
Since is in quadrant 1,
You have: .
Go for it!