Question

he point (3, 4) is on the terminal side of an angle in standard position. Determine the exact value of the cosine function of this angle.

Answer 1

you have a nice 3 - 4 - 5 right triangle to work with

Answer 2

so you know all the necessary ratios.
\[\sin(\theta)=\frac{4}{5},\cos(\theta)=\frac{3}{5} \] etc

Answer 3

oh does cos = adj/opp

Answer 4

for a right triangle cosine is adjacent over hypotenuse