Trig for larger angles: What's sin(250)? Use the unit circle to tackle bigger angles
The unit circle has coordinates (x, y) which x-axis as cos(θ) and y-axis as sin(θ), where θ is the angle that the line segment from the origin to (x, y) makes with the positive x-axis and the point (x, y) goes around the circle, its y-coordinate is sin θ.
