Suppose is an angle in the standard position whose terminal side is in quadrant III and sec=-13/12

When you are making a circle graph by hand, how do you convert a number for a part into its corresponding angle measure in the circle graph? when you are making a circle graph by hand, what should you do if one of your angle measures is greater than 180°?

Iam a rectangle. my perimeter is 60 feet. how much are do i cover?

The square root of 9x plus 7 plus the square rot of 2x equall to 7