Me for extra points and brainliest anwser

Recall that cosA = x / r, where r is hypotenuse, and x is adjacent.

If you look at 45 degree on the unit circle, the value pair that corresponds is (sqrt(2)/2, sqrt(2)/2). Since cos only care about the x value, we take sqrt(2)/2 = 0.707.

The correct answer is -4