Picture the unit circle! x=cos, y=sin .a. sin<0 in quads 3 and 4. b. tan<0, cos>0 when sin<0,cos>0. That is quad 4.

Secure Information

Content will be erased after question is completed.

Enter the email address associated with your account, and we will email you a link to reset your password.

Forgot your password?

Sign Up