Calculate cos(-π/3) on the unit circle

Home Calculate $cos(-pi/3)$ on the unit circle Answer 1 Chloe Evans To find $cos(-pi/3)$, we first need to understand its position on the unit circle. The angle $-pi/3$ is equivalent to rotating $pi/3$ radians in the clockwise direction. On the unit circle, $pi/3$...

Determine the Quadrant of a Trigonometric Function

Home $ ext{Determine the Quadrant of a Trigonometric Function}$ Answer 1 Abigail Nelson Consider the angle $theta = 210^circ$. To determine the quadrant where this angle lies, we will use the unit circle. The angle $210^circ$ is measured from the positive x-axis in...

Calculate cos(-π / 3) using the unit circle

Home $ ext{Calculate } cos(-pi / 3) ext{ using the unit circle}$ Answer 1 Henry Green Using the unit circle, we know that the angle $-pi / 3$ corresponds to moving $pi / 3$ radians clockwise from the positive x-axis. Since $cos$ is the x-coordinate of the point on the...