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Mathematics 10 Online
OpenStudy (anonymous):

For the displayed triangle, provide the following value. Round your answer to two decimal places. c = ?

OpenStudy (anonymous):

OpenStudy (cydney_morgan):

@iPwnBunnies Can you do this?

OpenStudy (ipwnbunnies):

Are you familiar with cos, sin, and tan?

OpenStudy (anonymous):

Yes, but I'm not great at it, so..

OpenStudy (ipwnbunnies):

Kk. We're given some angle, the side opposite of the angle, and we need to find the hypotenuse. Do you know if we need to use cos, sin, or tan for this problem?

OpenStudy (anonymous):

sin?

OpenStudy (ipwnbunnies):

Yes. :D And... \[\sin(x) = \frac{opposite}{hypotenuse}\]

OpenStudy (anonymous):

I'm lost.. would you do 43/90?

OpenStudy (anonymous):

I thought you use the pythagorean theorem..

OpenStudy (ipwnbunnies):

We can't use Pythagorean Theorem, because we're not given 2 sides. Just an angle and a side.

OpenStudy (anonymous):

Okay, so what do I do...?

OpenStudy (ipwnbunnies):

Well, 43 degrees is the angle, 4 is the opposite side, and c is the hypotenuse. \[\sin(43) = \frac{4}{c}\] Solve for c, use a calculator.

OpenStudy (anonymous):

c = 10.75?

OpenStudy (ipwnbunnies):

Err, no. Try again. :3 \[c = \frac{4}{\sin(43)}\]

OpenStudy (anonymous):

I don't think I'm doing this right.. I got 0.09

OpenStudy (ipwnbunnies):

No, you're not. XD Hmm, the sine of 43 degrees is 0.681

OpenStudy (ipwnbunnies):

\[c = \frac{4}{0.681}\]

OpenStudy (anonymous):

5.87?

OpenStudy (ipwnbunnies):

Yesh.

OpenStudy (anonymous):

@iPwnBunnies

OpenStudy (anonymous):

That was wrong.. :/

OpenStudy (ipwnbunnies):

There's no way, hold on.

OpenStudy (ipwnbunnies):

http://prntscr.com/3gkw1e

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