Question

if cos(x)=1/3 what is sin(x)?

Answer 1

how to find it?

Answer 2

A triangle should help you...

Answer 3

how come?

Answer 4

Here's a right triangle, with the angle x.

Answer 5

Now, you're given cos(x) = 1/3
which two sides does the cosine-function relate?

Answer 6

adj/hyp

Answer 7

good. so, the adjacent side measures...

Answer 8

1/3

Answer 9

No...well maybe, but it's adj/hyp
and 1/3
so which is adj?

Answer 10

oh, 1

Answer 11

good, and hyp is 3.
Let's mark those out
Can you find the length of the missing side?
Use the Pythagorean theorem.

Answer 12

lol, I see it, thanks!

Answer 13

Really? 'Coz I don't :>

LOL
Post your answer, but remember, that missing side is NOT the answer yet, you're asked for sin(x) ;)

Answer 14

no, it's ok, I wasn't recognizing the cos as 1/3, I can do rest of my problem now

Answer 15

Well, if you're sure, then, great ^_^
Though, do post your answer, if you're willing :>

Answer 16

3^2=1^2+?^2.....

Answer 17

I was stuck with the 1/3, thank you

Answer 18

oh okay.

Well, you seem to know what you're doing. ^_^