ze4life
find the value of x



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Brittni0605
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Do you know law of sines?

ze4life
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i couldn't do it on this

Brittni0605
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yes, you can to find the angle x.

Brittni0605
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dw:1355438129894:dw

ze4life
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x=sin1(.0087679 then what do i do

Brittni0605
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Umm, that decimal is incorrect.

Brittni0605
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dw:1355438776265:dw

ScottB05
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Guys you cant use the law of sines on a triangle that's not 90 degrees angle, right????

ScottB05
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Looks to me like\[c^{2} = a^{2} + b^{2}  2bc CosA\]

ScottB05
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Correct me if I'm wrong; please  Is that triangle a right angle??

ze4life
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i have no clue what do u think brittini

ze4life
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nd no its not a right angle

Brittni0605
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Law of sines is not only for right triangles.

Brittni0605
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You cant use law of cosines, and I think if you were to try @ScottB05 's setup is incorrect.

Brittni0605
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Ok, you still cant use the law of cosines.

ze4life
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but how do i start in this problem

Brittni0605
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I would say since the angles in a triangle must add to 180 degrees. Find your missing angle.

ScottB05
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dw:1355439236917:dw
Again  Please tell me if I'm going about this the wrong way?

ScottB05
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Oh.... Right ignore me completely you made a mistake apparently  I'm so stupid sometimes .

ze4life
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im confused

Brittni0605
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I still disagree with @ScottB05

ScottB05
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With good reason, I said I'm wrong already xD

Brittni0605
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Oh, okay. :p

ze4life
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now u think its solved by the law of cosines

Brittni0605
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No, I think law of sines

ze4life
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okay srry but lets start from the beginning because i got messed up with all this srry brittini

Brittni0605
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No prob.

ze4life
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thnxs k

Brittni0605
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dw:1355440194446:dw

Brittni0605
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So, since you know two angles..can you find the third one? Hint: all angles in a triangle add up to 180 degrees

ze4life
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63 degrees

Brittni0605
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Great, so now your triangle looks like: dw:1355440610624:dw

ze4life
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:( can u show me the equation to help solve it

Brittni0605
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You can use law of cosines.

Brittni0605
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dw:1355441141043:dw

Brittni0605
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dw:1355441267636:dw

ze4life
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x=1924.7 its so off

ze4life
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what did u get brittni

ScottB05
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@Brittni0605 You've done what I've done way up
My answer to that equasion was x = 26.9

ze4life
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i know but i did something wrong

ze4life
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wait actually u did the wrong problem this is the right one dw:1355443147072:dw

ze4life
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can u try to solve it and see what u get

ScottB05
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dw:1355443262333:dw

ze4life
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thats much better thnxs i really understood my mistake

ScottB05
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I may still be wrong but I believe this to be correct. Right until proven wrong =)

ze4life
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i think its the right answer

Brittni0605
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oops, sorry guys, I was eating.

ze4life
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hhh its alright so i think we got the right answer

ScottB05
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I'd be happier if @Brittni0605 double checked my answer  I was wrong before :)

ze4life
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what do u think brittni

Brittni0605
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Hm, this is interesting. The picture must be drawn incorrectly, two angles are equal so it has to be an isosceles triangle.

ze4life
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its not exactly the same as the assignment but im new in this drawing thing

Brittni0605
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dw:1355444759541:dw

Brittni0605
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maybe that's better..

ze4life
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yup way better :p

Brittni0605
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I agree with thinking x= 9.56

ze4life
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thnxs people i will close the question and i really appreciate ur help

Brittni0605
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Yep, np.

ScottB05
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dw:1355445651964:dwHmm... Wait actually... Haha I just saw something cause u drew it like that

Brittni0605
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Hmm..

Brittni0605
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Umm, cosine would be adjacent over hypotenuse, not hypotenuse over adjacent.

ScottB05
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dw:1355446061993:dwOf course :L

Brittni0605
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Hmm, and for the original triangle..xsin54 = 8sin63, x= 8.81

ScottB05
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So looks like we found a solution, x = 8.81; after about 2 hours? :)

Brittni0605
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Lol, phew, I feel so dumb.

ze4life
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hhh really its hilarious so THE ANSWER IS 8.81 for sure :p

Brittni0605
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Yes, I agree. Sigh.

ScottB05
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Well in Scotland it's 1.10 am; I can sleep happy knowing it's solved! :)

Brittni0605
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Ohh, wow. Well goodnightish then..lol.

ScottB05
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Haha, cheers, gn ;) Maybe I can blame my stupic mistakes on the time? :D

Brittni0605
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Lml..we both made silly mistakes, just bc we are human.

ScottB05
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You hope I'm human.... :')

Brittni0605
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..oh no, im scared..I do hope you're human..lol.