We have to find the included angle between
and
.
An angle is the space (usually measured in degrees) between two intersecting lines or surfaces at or close to the point where they meet.
Here, in the given triangle KLJ, Angles formed along the line segment JL are
and
.
Angles formed along the line segment JK are
and
.
So, the included angle between the line segments JL and JK is
.