The degree measurement of angle A is already equal to 50 degrees.
In this question , we have to simplify the given ratio, which is
12xy:3x
First we have to see which factor is common in numerator and denominator,
We can write 12 as 3 times 4, that is

So the common factor is 3x.
In the next step, we cancel out 3x

And that's the required simplified form .
It would be 1 / (x + 2) (x - 4)
It’s 4 according to my calculator
What is the area of a circle with radius 7.5