Option A is right
Answer= 5/13
Given a right triangle RST.
The triangle is right angled at R
The hypotenuse is 13 and legs are 5 and 12.
We have to find the value of sine of S
We know by definition sin of any angle = opposite side/hypotenuse
Hence sin S = opposite side/Hypotenuse.
S has opposite side as 5 and hypotenuse as 13.
So sin S = 5/13
Option A is right.
