Question

Determine the sine of ∠A.

Answer 1

Answer:

Step-by-step explanation:

sin = opposite/hypotenuse

In this case

AB = hypotenuse

BC = opposite

sinA = BC/AB=12/13

so the correct answer is A

Answer 2

A. 12/13

$sinA=\frac{opp}{adj}\\sinA=\frac{12}{13}\\sinA=0.92$