Answer:
[tex]\huge\boxed{\sf 90\ degrees}[/tex]
Step-by-step explanation:
P is the center of the circle
Chord RL passes through the center of the circle. Hence it is the diameter of the circle.
According to Thales's Theorem: (The angle opposite to the diameter is 90 degrees when a triangle is drawn in that semi-circle)
=> m∠REL = 90°
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807
