Question

Using the unit circle, what is the calculated value of 45 degrees?
(5 points)
sin 45°
1
2
1
√2
2
√3
2

Answer 1

sin 45° = √2/2 (equivalently 1/√2). On the unit circle the point at 45° is (√2/2, √2/2), so the sine (y-coordinate) is √2/2.