Find the point (x, y) on the unit circle that corresponds to the real number t. t=(π÷4)

Question

Find the point (x, y) on the unit circle that corresponds to the real number t. t=(π÷4)

Answer 1

θ = π / 4

y = sin π / 4

y = √2 / 2

x = cos π / 4

x = √2 / 2