anonymous
  • anonymous
What is the length of the portion BC of the cloth?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
8cos35 degrees 8sin 35 degrees sin35 degrees/8 cos35 degrees/8
saifoo.khan
  • saifoo.khan
use sin ratio.

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More answers

anonymous
  • anonymous
idk what that is..
saifoo.khan
  • saifoo.khan
\[\sin \theta = \frac{opposite}{hypotenuse}\]
anonymous
  • anonymous
idk what all that means..
saifoo.khan
  • saifoo.khan
|dw:1333128731997:dw|Dont sleep in class. ;)
anonymous
  • anonymous
I'm home schooled.. I can't sleep in class , haha . I just don't understand this stuff & I have HORRIBLE memory :) Ha !
saifoo.khan
  • saifoo.khan
lol. Ok. this is easy i can teach you. :)
anonymous
  • anonymous
So what is it exactly that I'm supposed to do here ??
saifoo.khan
  • saifoo.khan
There are three basic ratios. Sin ratio, cos ratio, tan ratio. you have to remember these.. Not them down somewhere.
anonymous
  • anonymous
okay..
saifoo.khan
  • saifoo.khan
|dw:1333128936512:dw|
saifoo.khan
  • saifoo.khan
|dw:1333129034555:dw|
saifoo.khan
  • saifoo.khan
Now these are the three sides. now it depends upon the question which two ratio you have to use.. you have to judge it by yourself.
saifoo.khan
  • saifoo.khan
Now in your question.. you are given hypotenuse and you have to find the opposite side.. so u will be using sin ratio.
anonymous
  • anonymous
i still don't get it though . like , what #'s do i plug in & where ?? it's so confusing to me!!
inkyvoyd
  • inkyvoyd
Ok, so the basic idea is that if you have a right angle, and You know the second angle, you know the ratio of the two sides. Now all of the trig functions essentially take in an angle, and out put a ratio.
anonymous
  • anonymous
i'm still confused :(
inkyvoyd
  • inkyvoyd
Do you want to talk it over in chat?
anonymous
  • anonymous
No.. too overwhelming . Just mssg me .
inkyvoyd
  • inkyvoyd
Can we do something like tiny chat? Messaging is too slow. If you have a skype, you could chat with me there (or create an anonymous one)
anonymous
  • anonymous
i cant , im also takin a test & i can only be on here & my test (im bein supervised)
inkyvoyd
  • inkyvoyd
Wait, you are allowed to go here and on your test?
anonymous
  • anonymous
Yes
inkyvoyd
  • inkyvoyd
Alright, Trigonometry is like an extension of triangle congruence.
inkyvoyd
  • inkyvoyd
*triangle similarity
inkyvoyd
  • inkyvoyd
For triangle similarity, we can prove that two triangles are similar given certain info (SAS, AA, SSS, etc). But if they are similar, then how can we figure out the side lengths they have?
anonymous
  • anonymous
idk..
inkyvoyd
  • inkyvoyd
The answer is that we use trigonometry. The basic idea of trig is that in a right triangle where we know all the degree measures, we can determine the ratio between the sides.
inkyvoyd
  • inkyvoyd
Tell me if you are following what I'm saying, ok
anonymous
  • anonymous
I'm not.. haha sorry . I am so confused !! I'm a visual/audio learner..
inkyvoyd
  • inkyvoyd
ok, who is supervising you? I have file that will help you a lot, but it's for a geometry software called "GeoGebra"
anonymous
  • anonymous
i have geogebra
inkyvoyd
  • inkyvoyd
Alright, take a look at this file. Tell me if it helps.
anonymous
  • anonymous
I'm just gonna guess cos theres like 4 or 5 probs like this & I have 15 mins to finish 20 more problems !!!!!
inkyvoyd
  • inkyvoyd
sigh. if they are typable, put them into wolfram alpha dot com or something,
anonymous
  • anonymous
So what's the answer

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