First we need to find the value of x.
cosx = 3 / 5 is also cos^-1(3/5) = x
cos^-1(3/5) = 53.13
So, cos(2π + 53.13) = cos(59.41)
Finally, cos(59.41) = 0.509
Apologies. I did that in degrees by accident.
cos^-1(3/5) = .9273
So, cos(2π + .9273) = cos(7.21)
Finally, cos(7.21) = .6 or 3/5
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?