posted by Kate on .
Determine the EXACT values of each of the following:
a) sin 240°
b) cos 135°
1. where is the angle ? in quadrant III , so it is -
2. How far away from the x-axis ? 60° (the angle in standard position)
= - sin 60°
= = √3/2 , (from the 30-60-90 triangle)
see if you can the second one in the same way.
small typo, answer should have said ....
= - √3/2