Question

0

Answer 1

http://www.mathopenref.com/trigterminalside.html

Answer 2

what is cosine, do you recall?

Answer 3

Use SOH CAH TOA (read it like it is written)

Sin(Θ) = Opposite/Hypothesis
Cos(Θ) = Adjacent/Hypothesis
Tan(Θ) = Opposite/Hypothesis

Answer 4

use the Pythagorean thm to find out h

Answer 5

then you have your answer

Answer 6

These terms can be rewritten to,

Θ = arcsin(Opposite/Hypothesis)
Θ = arccos(Adjacent/Hypothesis)
Θ = arctan(Opposite/Hypothesis)

Answer 7

we don't need those

Answer 8

One way to do this problem:

Find the angle Θ
Then just take cos(theta)

Answer 9

5²+12²=13, but it looks like this doesn't apply here, because the point is diagonally from the triangle, I would understand if it was (-13,5)

Answer 10

or if it was (5,-13)

Answer 11

maybe, it IS 13, and not 12 ?

Answer 12

-:(

Answer 13

Well you can still solve it, but beware that 12 is a hypotenuse, not one of the legs.

Answer 14

Or not, I am wrong

Answer 15

(12,-5)

Yes, I am wrong

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Answer 16

GOod I am sorry, my brain wasn't working, the hyp IS 13.

Answer 17

Follow their direction, sorry for confusing you again

Answer 18

omg ?

Answer 19

cosine (theta) = adj/hy
cos(theta)=12/13