Answer and Explanation
Your Answer is
Correct Answer is E
Explanation
According to the sin2x+cos2x=1 theorem, the E option can be obtained.
57. Given that sin A = 
and 0° ≤ A < 360°, what are all possible values of cos A ?
57. Given that sin A = and 0° ≤ A < 360°, what are all possible values of cos A ?
Your Answer is
Correct Answer is E
Explanation
According to the sin2x+cos2x=1 theorem, the E option can be obtained.