SOLUTION: PLEASE OPEN THIS LINKS. SO THEY ARE LINK PLS OPEN THEM. Please answer these questions: THEY ARE LINKS SO PLEASE OPEN THEM. * http://static.tumblr.com/o5ekeuz/2OOma6taj/abc.png a

Algebra ->  Geometry-proofs -> SOLUTION: PLEASE OPEN THIS LINKS. SO THEY ARE LINK PLS OPEN THEM. Please answer these questions: THEY ARE LINKS SO PLEASE OPEN THEM. * http://static.tumblr.com/o5ekeuz/2OOma6taj/abc.png a      Log On


   

Question 649460: PLEASE OPEN THIS LINKS. SO THEY ARE LINK PLS OPEN THEM. Please answer these questions: THEY ARE LINKS SO PLEASE OPEN THEM.
* http://static.tumblr.com/o5ekeuz/2OOma6taj/abc.png
and * http://static.tumblr.com/o5ekeuz/hBhma6td6/abcc.png
PLEASE THANKS I NEED IT NOWI NEED IT NOW ASAP PLS PLS PLS I BEG YOU.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
* http://static.tumblr.com/o5ekeuz/2OOma6taj/abc.png
This has 2 sketches, says to find ABC.
The 1st one has no B in it.
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For the 2nd one, all you can say is ABC = arctan((x^2 + 81)/12x)
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If the 12x and the x^2 + 81 are the angles, and not the sides, then
x^2 + 12x + 81 = 90
x^2 + 12x - 9 = 0
Solved by pluggable solver: SOLVE quadratic equation (work shown, graph etc)
Quadratic equation ax%5E2%2Bbx%2Bc=0 (in our case 1x%5E2%2B12x%2B-9+=+0) has the following solutons:

x%5B12%5D+=+%28b%2B-sqrt%28+b%5E2-4ac+%29%29%2F2%5Ca

For these solutions to exist, the discriminant b%5E2-4ac should not be a negative number.

First, we need to compute the discriminant b%5E2-4ac: b%5E2-4ac=%2812%29%5E2-4%2A1%2A-9=180.

Discriminant d=180 is greater than zero. That means that there are two solutions: +x%5B12%5D+=+%28-12%2B-sqrt%28+180+%29%29%2F2%5Ca.

x%5B1%5D+=+%28-%2812%29%2Bsqrt%28+180+%29%29%2F2%5C1+=+0.708203932499369
x%5B2%5D+=+%28-%2812%29-sqrt%28+180+%29%29%2F2%5C1+=+-12.7082039324994

Quadratic expression 1x%5E2%2B12x%2B-9 can be factored:
1x%5E2%2B12x%2B-9+=+%28x-0.708203932499369%29%2A%28x--12.7082039324994%29
Again, the answer is: 0.708203932499369, -12.7082039324994. Here's your graph:
graph%28+500%2C+500%2C+-10%2C+10%2C+-20%2C+20%2C+1%2Ax%5E2%2B12%2Ax%2B-9+%29

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Ignore the negative numbers
12x =~ 8.4984 degs
x^2 + 81 =~ 81.5016 degs
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and * http://static.tumblr.com/o5ekeuz/hBhma6td6/abcc.png
In that one, if the 3x and the 10x/3 are the angles, then
3x + 10x/3 = 90 degs
9x + 10x = 270
x = 270/19 degs
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3x = 810/19 degs =~ 42.63 degs
10x/3 =~ 47.37 degs