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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
 one year ago
 one year ago
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
 one year ago
 one year ago

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dessykBest 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,
 one year ago

dessykBest ResponseYou've already chosen the best response.0
law of sines is a/sinA=b/sinB
 one year ago

GTBest ResponseYou've already chosen the best response.1
Sine rule says: SinA/a = SinB/b = SinC/c
 one year ago

dessykBest ResponseYou've already chosen the best response.0
okay i understand that waitt why is it sina/a instead of a/sin a
 one year ago

GTBest ResponseYou've already chosen the best response.1
SinA/a = Sin(39.5)/145.67 SinA = a*something
 one year ago

GTBest ResponseYou've already chosen the best response.1
Because they mean the same thing. A/B = C/D => B/A = D/C
 one year ago

dessykBest ResponseYou've already chosen the best response.0
waitt does it even matter
 one year ago

dessykBest ResponseYou've already chosen the best response.0
okay im not understanding
 one year ago

GTBest ResponseYou've already chosen the best response.1
You can find angle A by simply subtracting angles B and C from 180.
 one year ago

dessykBest ResponseYou've already chosen the best response.0
okay i understand which would be 66.8
 one year ago

GTBest 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.
 one year ago

GTBest ResponseYou've already chosen the best response.1
SinA/a = SinB/b = SinC/c IS SAME AS a/SinA = b/SinB = c/SinC
 one year ago

dessykBest ResponseYou've already chosen the best response.0
but then a would be .00436
 one year ago

GTBest 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.
 one year ago

dessykBest ResponseYou've already chosen the best response.0
really then let me try again...... im still not getting that are you multiplying or dividing
 one year ago

GTBest 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
 one year ago

dessykBest ResponseYou've already chosen the best response.0
im not getting it first you divided than you did something else im so confused
 one year ago

dessykBest ResponseYou've already chosen the best response.0
i also had another question
 one year ago

imagreencatBest ResponseYou've already chosen the best response.1
Which part don't you understand? :) I can help you.
 one year ago

dessykBest ResponseYou've already chosen the best response.0
okay, so instead of 66.8 its 66.3
 one year ago

dessykBest ResponseYou've already chosen the best response.0
im so fustrated im confusedd
 one year ago

GTBest ResponseYou've already chosen the best response.1
Punch it into the calculator and you get slightly different number from 210.5
 one year ago

GTBest 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
 one year ago

imagreencatBest 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.
 one year ago

GTBest 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?
 one year ago

dessykBest ResponseYou've already chosen the best response.0
yeppp m ycalculator wasnt in degree mode so let me try again
 one year ago

GTBest ResponseYou've already chosen the best response.1
Good....close enough to 210. :)
 one year ago

dessykBest ResponseYou've already chosen the best response.0
next problem b=58.2 c=68.3 C=51.3 degrees were gunna find a
 one year ago

GTBest 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.
 one year ago

dessykBest 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
 one year ago

dessykBest ResponseYou've already chosen the best response.0
is my answer correct thats all im asking
 one year ago

GTBest 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.
 one year ago

dessykBest ResponseYou've already chosen the best response.0
well i must be doing something wrong but sin68.3/51.3=.018111746
 one year ago

dessykBest ResponseYou've already chosen the best response.0
128.7/.018111746=7105.88
 one year ago

GTBest 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
 one year ago

dessykBest 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
 one year ago

dessykBest ResponseYou've already chosen the best response.0
ohhh ok so u must follow the formula
 one year ago

GTBest ResponseYou've already chosen the best response.1
Now that you know B, you find A by doing 180  51.3  41.68 = 87
 one year ago

GTBest 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
 one year ago

wombatBest 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 \[\frac{\sin(A)}{a}=\frac{\sin(B)}{b}=\frac{\sin(C)}{c}\]
 one year ago

dessykBest ResponseYou've already chosen the best response.0
i have another question but hoew did you get 41. sometrhing but i got 45.42
 one year ago

GTBest ResponseYou've already chosen the best response.1
You mean for B = 41? I did the inverse sine function on the value 0.665.
 one year ago

dessykBest 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
 one year ago

GTBest 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.
 one year ago

jatinbansalhotBest ResponseYou've already chosen the best response.0
dessyk.. nice drawing.. :) :)
 one year ago

dessykBest ResponseYou've already chosen the best response.0
thank you i guesss lol can yoiu help me!!
 one year ago

jatinbansalhotBest ResponseYou've already chosen the best response.0
what is the question
 one year ago

dessykBest 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
 one year ago

jatinbansalhotBest 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
 one year ago

dessykBest 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
 one year ago

jatinbansalhotBest ResponseYou've already chosen the best response.0
did my answer help u even a bit or not ?
 one year ago

dessykBest ResponseYou've already chosen the best response.0
a little bit its just that i need help going through the process
 one year ago
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