Question #38c7a
1 Answer
Nov 20, 2017
Convert Radians to Degrees
cos(-150)
Get coterminal
cos(360+-150)
cos(210)
Get Reference angle
cosine is on quadrant III therefore its negative
Convert Radians to Degrees
cos(-150)
Get coterminal
cos(360+-150)
cos(210)
Get Reference angle
cosine is on quadrant III therefore its negative