What is the measure of

m<C = 90°

On applying the concept of vertically opposite angles.

m< C = m<GOE= 90°

Or, we can apply the concept of straight angle

m<DOE is straight angle

m<C +42+48=180°

m<C= 180-90° = 90°

a is the correct

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b