If the point (3/5,4/5) corresponds to an angle 0 in the unit circle, what is csc θ?
a. 4/5
b. 4/3
c. 3/4
d. 5/3
e. 5/4

Suppose the two points are two side of a triangle and a right angle 0
cosider hypotenuse is z and two sides are x and y
using Pythagorean theorem
 z^2=x^2+y^2
 z^2=(3/5)^2+(4/5)^2
 z^2=9/25+16/25
 z^2=9+16/25
 z^2=25/25
 z^2=1
taking square root on both sides
z=1
now sinθ=4/5/1=4/5
while cscθ=1/sinθ=5/4
hence cscθ=5/4
right option is E. 5/4

It is the top one. the answer is -7. that is smallest