Answer:
See answers below
Step-by-step explanation:
Find the diagram attached
To get AB, use the pythagoras theorem;
AB² = 12² + 9²
AB² = 144 + 81
AB² = 225
AB = √225
AB = 15
Since
Hypotenuse = AB
sin <A = BC/AB
Sin <A = 12/15
Sin <A = 4/5
<A = arcsin(0.8)
<A = 53.13degrees
Sin <B = AC/AB
Sin<B = 9/15
Sin <B = 0.6
<B = arcsin(0.6)
<B = 36.87degrees
