Answer:
12/13
Step-by-step explanation:
Since this is a right triangle, we can use trig functions
sin O = opp / hyp
So we need to find the hypotenuse
Using the Pythagorean theorem
a^2 + b^2 = c^2
5^2 + 12^2 = c^2
25+144= c^2
169 = c^2
Taking the square root
13 = c
sin O = opp / hyp
sin O = 12/13
