Question

Help me plzzzzzzz ;(

Answer 1

can u assist me plz???

Answer 2

Let's represent this angle at the correct quadrant.

Answer 3

Got that?

Answer 4

ya so is it -3/15??

Answer 5

I am so sorry.
Th correct pic is this, not what I sent. Sorry.

Answer 6

is it radical234/15??

Answer 7

Before get the cos, we will find the length of the unknown leg of the right angle.

Answer 8

This could be achieved by "Pathagorean theorem":
\[13^2=x^2+5^2\]
\[x=\sqrt{169-25}=\sqrt{144}=12\]

Answer 9

So the cosine of this angle is -12/13
The last choice is the correct one (e)