Pyth Thm and Trig

Question

AC = 4, BC = 11.3

Find sin(A). Round to 2 decimal places.

Answer 1

the problem doesn't say so, but

assuming triangle is a right triangle,

the problem description is still incomplete.

angle A could be the 90 degree angle

then AB=√(11.3²-4²)

angle C could be the 90 degree angle

the AB=√(11.3²+4²)

angle B cannot be 90 degrees since then 4 would be hypotenuse

and 4<11.3 and the hypotenuse must be greater then either of the other sides