Question

Find angle FCB sorry that its dark..

Answer 1

First you need to find variable g. We know that 53+g=90. So g=37

Next, we know that angle FCA is congruent to angle g.

To find angle FCB, you take 180-37=143.
The reason for this is we know line AB is a straight line so it equals 180 degrees.

FCB=143

Answer 2

143 degrees (angles on a straight line)