If the point (3/5,4/5) corresponds to an angle theta in the unit circle, what is csc ?
a. 4/5
b.4/3
c.3/4
d.5/3
e.5/4

We have a triangle:
the side opposite the angle Ф is 4/5, 
The side adjacent the angle Ф is 3/5

1) we calculate the hypotenuse, by the Pythagoras Theorem:
h=√[(4/5)²+(3/5)²]=1

2) we calculate the csc of Ф
csc Ф= hypotenuse / opposite side

csc Ф=1/ (4/5)=5/4

e. 5/4

Ithink the answer is a