Answer:
a = 
Step-by-step explanation:
Using Pythagoras' identity in the right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
a² + 9² = 12²
a² + 81 = 144 ( subtract 81 from both sides )
a² = 63 ( take square root of both sides )
a = 
Answer:
86=8h
Step-by-step explanation:
Answer:
x = 43°
y = 32°
Step-by-step explanation:
None
The answer to this question is 5,120 you have to multiply by 2