Respuesta :
Use Pythagorean theorem
A^2 + B^2 = C^2
12^2 + B^2 = 15^2
Solves for b
A^2 + B^2 = C^2
12^2 + B^2 = 15^2
Solves for b
Answer:
b= 9
Step-by-step explanation:
a^2+b^2=c^2
144+b^2=225
b^2=81
b=9