Question

which ratio represents cosT?

Answer 1

did you learn SOH CAH TOA ?

Answer 2

how would i find the answer? i learned it i just don't know how to solve it @phi

Answer 3

which of the three (out of SOH CAH TOA) should you use ?

Answer 4

CAH , but how do i set it up ?

Answer 5

yes. C stands for cosine
and CAH is supposed to help you remember
cosine = adjacent / hypotenuse

any idea which side in the triangle is the hypotenuse ?

Answer 6

yes and i just divide adjacent by hypotenuse? how do i use the C though? @phi

Answer 7

The first step is figure out which of the 3 sides is the hypotenuse. can you do that ?

Answer 8

the hypotenuse is always opposite the 90 degree angle
the hypotenuse is always the longest side (in a right triangle)

Answer 9

i know that

Answer 10

so what is the length of the hypotenuse?

Answer 11

17 the adjacent is 8

Answer 12

ok on the 17
CAH means cos = adj/hyp = adj/17
that means you can cross off 2 of the choices because the bottom number has to be 17

Answer 13

a?

Answer 14

to find which side is the adjacent (out of the 2 sides that are left), you put your finger on the angle we are using (adj vs opp depends on the angle)

Answer 15

Is it 8 over 17?

Answer 16

put your finger on angle T
one side makes part of the angle that forms T
that is the adjacent side
the other side is "opposite" angle T (on the far side... in this case the bottom side is the opposite side)

you want the adjacent side.

Answer 17

8 over 17? @phi

Answer 18

your life will get easier if you can name each of the 3 sides ,once you pick one of the angles (that is *not* 90 degrees)