Answer:
See below
Step-by-step explanation:
For a right triangle, there are relationships between the sides and the angles of the triangle:



I would study the attached image for a better understanding.
Answer:
B
Step-by-step explanation:
I cant read that
Step-by-step explanation:
is there a clearer answer?
Answer:
The answer is 13.5
Step-by-step explanation:
Since there are 4 sides, the total minus the 3 other sides gives you the 4th side. 39a-7-9a is 30a-7, 30a-7-(5a-1)=30a-7-5a+1 (using the distributive property) =25a-6, 25a-6-(17a-6)=8a