Question

If cos -300° = x, then the value of x is

Answer 1

Cos(-theta) = cos theta
Cos (-300)= cos 300
=cos(270+30)
=sin 30
=1/2

Answer 2

here is the answer
cos-3o0=cos 300=cos 360-60=+cos 60(300 belongs to 4th quadrant in which cos value is always 0)=1/2