Question

Using the unit circle, determine the value of sin(-240°).

Answer 1

it’s the square root of 3, divided by 2 (sorry, can’t type any special characters at the moment)

Explanation:

-240 = 120 because you measure negative angles clockwise starting at 0.

Using unit circle, value of sin for an angle is the 2nd number

Answer 2

See my picture below for the answer.

Explanation:

If you look at the unit circle and locate 240 degrees. You will see an ordered pair. The first number -1/2 is the cos of 240 and the second number is the sin.