The value of ∠RFC = 50
Here, we want to find the measure of the angle RFC
From the diagram, mathematically;
∠RFC + ∠TFC = 180 ( Sum of angles on a straight line)
Thus;
5c + 100 + 2c + 150 = 180
7c + 250 = 180
7c = 180 - 250
7c = -70
c = -70/7
c = -10
But ∠RFC = 5C + 100
substitute the value of c here,
∠RFC = 5(-10) + 100
∠RFC = -50 + 100
∠RFC = 50
