You can
put this solution on YOUR website!First, find the lengths of all the sides
(hypotenuse)2 = (side1)2 + (side2)2

It's what is known as a 3-4-5 triangle
The tangent function in trig is (opposite side) / (adjacent side)
For the angle opposite the length 3 side, call it A
Tan A = 3/4
For the angle opposite the length 4 side, call it B
Tan B = 4/3
The remaining angle, opposite the hypotenuse is 90 degrees, as
with any right triangle. Call it C
Tan C = Tan 90
Tan 90 = infinity. This is because the adjacent side is zero
and the reciprocal of zero is infinity. You need to plot it on
the unit circle to see this.