00:01
So in this question it is given that fad is parallel to line ehc.
00:07
Also it is given that the measure of angle fab, this angle, this angle is equal to 40 degrees.
00:14
And also angle ecb, the measure of angle ecb is equal to 18 degrees.
00:19
We have to find the value of angle a, b .c.
00:21
So we have to basically find this angle.
00:23
So to find this angle, let us find the value of this angle.
00:28
So we can say that if fad and a .d and we can say that if fad and and e h -c are parallel then we can say angle f -a -b will be equal to angle b -hc.
00:38
So this angle will be equal to this angle.
00:41
These two angles will be equal why? because they are alternate inter -angles, okay.
00:46
So they have to be equal.
00:47
So they have to be equal.
00:48
So this has to be 48 degrees...