Answer:
9
Step-by-step explanation:
a^2 + b^2 = h^2
15^2= 12^2 + b^2
225=144+b^2
81=b^2
First problem:
C
Second:
A
Third:
x = 89. 98⁰
tan(x) = 29/ 14
x = tan-¹ (29/14)
Answer: 15.28
Step-by-step explanation: I just added them together