The value (cosine) is an important factor of trigonometry - to understand it, draw a circle. add a plus sign in the middle from top down - left to right. write 90 on the top, 0 on the right of the circle, 270 and the bottom, and 180 to the left. from the middle of the circle draw a line to your cosine value - DO NOT draw it at 180, 90, 270, or 0. Once you draw it draw a line from the tip of the LAST LINE YOU DREW A SECOND AGO to the HORIZONTAL line from the middle of your circle. the distance from that line to the middle of your circle is the cosine value and if it is to the right side do nothing if to the left add a "-"
Cosine goes from positive to negative at a constant pattern - causing this jump to be so smooth. click space to jump Do you guys know the Pythagorean theorem? a^2 + b^2 = c^2. sine^2(x) + cos^2(x) = 1
