This is a right triangle. We know that

Therefore,

Now we have:


The reciprocal is the flipped value so it will be11/9
Answer:
the last one 
Step-by-step explanation:
The answer to the question
Answer:
Your answer would be the first option.
A right angle is 90 degrees
An obtuse angle is more than 90 degrees and that angle is more that 90 degrees