cos ( x + (3pi/2) ) = sin x
Please note that if I apply the formula of subtraction of the cosine function, I get:
left side = cos (x +3pi/2) = cos x cos (3pi/2) - sin x sin(3pi/2) = cos x * 0 - sin x * (-1) = sin x = right side,
since cos(3pi/2) = 0, and sin(3pi/2) = -1
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?