Answer :

TSO
Five fourths of a right angle

A right angle is 90 degrees.

Five fourths is [tex]\sf \frac{5}{4} [/tex]

Five fourths OF A right triangle

[tex]\sf \frac{5}{4} [/tex] OF 90 degrees

Of means multiplication so:

[tex]\sf \frac{5}{4}\times 90 [/tex]

And that equals to 112.5

So your final answer is

[tex]\boxed{\bf{112.5~degrees}}[/tex]