It is given that y varies directly as x. if y = 5 when x = 4 determine the constant of variation.
a: -4/5
b: 4
c: 5
d: 5/4

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

Arecipe uses 2 cups of sugar to make 32 brownies. how many cups of sugar are needed to make 72 brownies?

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3