Question

The point (3, -4) is on the terminal side of an angle . What is cos theta ?

Answer 1

*Is on the terminal side of of angle theta

Answer 2

the answers choices:
-3/5
3/5
-3/4
3/4
3

Answer 3

This is the right triangle.
\[\cos \theta=\frac{ adjacent }{ hypotenuse }\]
The adjacent side is 3. Find the hypotenuse

Answer 4

how? @peachpi

Answer 5

is it 25?

Answer 6

the pythagorean theorem
a² + b²=c²

Answer 7

you have to take the square root of 25

Answer 8

so it is 5

Answer 9

yes

Answer 10

so would the answer to my question be 3/5?

Answer 11

yes

Answer 12

ok, thank you!

Answer 13

you're welcome