Lots of points
convert each angle measure into degrees
7.51(convert this into degrees with explanation : d)

I'm going to assume that the ' 7.51 ' is the angle expressed in radians.
So this is just like any other unit conversion exercise.

You know that                  180 degrees = pi radians.

Divide each side by pi radians, and you have

                      180 degrees / pi radians = 1 .

Great !  Now take the angle you have ... 7.51 radians ...
and multiply it by ' 1 '.

      (7.51 radians) x (180 degrees / pi radians) =

                               (7.51 x 180 / pi) degrees =  430.29 degrees

As you ( I ) worked through this problem, a very useful number
fell out . . .  It's  180/pi  =  57.296 ,  or just  57.3  is close enough.

Here's how you can use that number:

-- 1 radian  =  57.3  degrees

-- 1 degree  =  1/57.3  of a radian

-- Got some radians ?  Multiply by  57.3  to get degrees.

-- Got some degrees ?  Divide by  57.3  to get radians.