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dessyk
Group Title
need help im going to draw a triangle and im doing the law of sines so if anyone can help please do cuz im confused.. please click this to helpp
 2 years ago
 2 years ago
dessyk Group Title
need help im going to draw a triangle and im doing the law of sines so if anyone can help please do cuz im confused.. please click this to helpp
 2 years ago
 2 years ago

This Question is Closed

dessyk Group TitleBest ResponseYou've already chosen the best response.0
dw:1335063015673:dw
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
Do you need to find a?
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
so let me explain im trying to find a okay c=96.3, b=145.67 , B=39.5degrees, C=74.2degrees,
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
law of sines is a/sinA=b/sinB
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
Sine rule says: SinA/a = SinB/b = SinC/c
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
okay i understand that waitt why is it sina/a instead of a/sin a
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
SinA/a = Sin(39.5)/145.67 SinA = a*something
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
Because they mean the same thing. A/B = C/D => B/A = D/C
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
waitt does it even matter
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
okay im not understanding
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
You can find angle A by simply subtracting angles B and C from 180.
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
okay i understand which would be 66.8
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
Then, use this: SinA/a = Sin(39.5)/145.67 SinA = a*something SinA/something = a To find a.
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
SinA/a = SinB/b = SinC/c IS SAME AS a/SinA = b/SinB = c/SinC
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
but then a would be .00436
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
I am getting 210.5
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
That "something" in my expression is 0.00436. Divide Sin66.8 by that "something" value. Then, you get the value of a.
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
really then let me try again...... im still not getting that are you multiplying or dividing
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
SinA/a = Sin(39.5)/145.67 SinA = a*0.00436 a = SinA/0.00436 a = Sin66.8/0.00436 a = 210.5
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
im not getting it first you divided than you did something else im so confused
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
i also had another question
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
Post it separately.
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
i dont understand
 2 years ago

imagreencat Group TitleBest ResponseYou've already chosen the best response.1
Which part don't you understand? :) I can help you.
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
okay, so instead of 66.8 its 66.3
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
im so fustrated im confusedd
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
Punch it into the calculator and you get slightly different number from 210.5
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
SinA/a = Sin(39.5)/145.67 SinA = a*0.00436 a = SinA/0.00436 a = Sin66.3/0.00436 a = 210
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
i neeed helpppp
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
i got 47.99
 2 years ago

imagreencat Group TitleBest ResponseYou've already chosen the best response.1
Check your calculator first. I'm guessing you're getting different answers because your calculator is not in degree mode. That's why it's treating your angles differently.
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
wait no i got 110.05
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
How in the world can a length of a side of a triangle be negative? Can you show the arithmetic you used to get that number?
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
yeppp m ycalculator wasnt in degree mode so let me try again
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
yayy i got 209.69
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
Good....close enough to 210. :)
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
next problem b=58.2 c=68.3 C=51.3 degrees were gunna find a
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
At this point, it is simply plugging in values into that sine rule ratios and cranking out numbers in a calculator. There is not much help you need.
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
yeaa but i want to do it my self then have someone do it so i can nn check my answer to make sure its correct
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
i got 7105. 88
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
is my answer correct thats all im asking
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
It can't be that big.
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
Angles are almost close to each other. So, side lengths have to be close to each other too.
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
well i must be doing something wrong but sin68.3/51.3=.018111746
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
128.7/.018111746=7105.88
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
b=58.2 c=68.3 C=51.3 degrees SinB/b = SinC/c => SinB = 58.2 * Sin(51.3)/68.3 => SinB = 0.665 B = 41.68
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
becuase i couldnt find A or B so i figured they were the same by suntracting 18051.3
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
ohhh ok so u must follow the formula
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
Now that you know B, you find A by doing 180  51.3  41.68 = 87
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
noww i get it
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
SinA/a = SinC/c => a = c * SinA/SinC => a = 68.3 * Sin(87)/Sin(51.3) => a = 87.4
 2 years ago

wombat Group TitleBest ResponseYou've already chosen the best response.0
@dessyk The following variations of Law of Sines are the same: \[\frac{a}{\sin(A)} = \frac{b}{\sin(B)}=\frac{c}{\sin(C)}\] and \[\frac{\sin(A)}{a}=\frac{\sin(B)}{b}=\frac{\sin(C)}{c}\]
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
i have another question but hoew did you get 41. sometrhing but i got 45.42
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
You mean for B = 41? I did the inverse sine function on the value 0.665.
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
yes, ohh reallyy you see im confused now i thought u just i thought u just took .6650*68.3=45.42
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
Sin(B) = 0.665 => B = inverse sine (0.665). On the calculator, you have to first press 0.665. Then, inv button, then the sin button.
 2 years ago

GT Group TitleBest ResponseYou've already chosen the best response.1
That gives you angle B.
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
i didnt get that
 2 years ago

jatinbansalhot Group TitleBest ResponseYou've already chosen the best response.0
dessyk.. nice drawing.. :) :)
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
thank you i guesss lol can yoiu help me!!
 2 years ago

jatinbansalhot Group TitleBest ResponseYou've already chosen the best response.0
what is the question
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
its up above next problem b=58.2 c=68.3 C=51.3 degrees were gunna find a
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
law of sines
 2 years ago

jatinbansalhot Group TitleBest ResponseYou've already chosen the best response.0
i didn't see above but u can find it very easily.. the formula is sin a / a = sin b / b = sin c / c or a /sin a = b / sin b = c / sin c use any of them what caters ur problem
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
okay but when i tried i started to get fustrated because i wasnt getting the righ tanswer
 2 years ago

jatinbansalhot Group TitleBest ResponseYou've already chosen the best response.0
did my answer help u even a bit or not ?
 2 years ago

dessyk Group TitleBest ResponseYou've already chosen the best response.0
a little bit its just that i need help going through the process
 2 years ago

petewe Group TitleBest ResponseYou've already chosen the best response.0
dw:1335070736451:dw
 2 years ago

petewe Group TitleBest ResponseYou've already chosen the best response.0
dw:1335070848159:dw
 2 years ago
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