If sin (x - (pi/2) = 0.73, then find cos (-x).
sin(x-pi/2) = -sin(pi/2-x) =-cos(x) =0.73
cos (-x) =cosx = -0.73
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?