Free points ( 50 points) hope you have a nice day

What is the measure of ac? 5 units 13 units 26 units 39 units

Evaluate cos2θ for cosθ = square root of 3/2

Which statement is true about the local minimum of the graphed function? over the interval[-4,-2], the local minimum is 0. over the interval [-2,-1] , the local minimum is 25. over the interval [-1,4], the local minimum is 0. over the interval [4,7], the local minimum is -7