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November 12th, 2009, 03:25 PM   #1
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Math problem

Hi everyone!

Heres another math problem...

Would anyone know how I would go about this?

Thank you in advance!

Ghuraba
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November 12th, 2009, 03:41 PM   #2
six
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Re: Math problem

seems to me like you don't even need to worry about the first guy wire at all. You need a function that deals with the Opposite Over Adjacent.
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November 12th, 2009, 03:50 PM   #3
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Re: Math problem

Quote:
Originally Posted by six
seems to me like you don't even need to worry about the first guy wire at all. You need a function that deals with the Opposite Over Adjacent.
You mean the tangent ratio?
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November 12th, 2009, 06:49 PM   #4
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Re: Math problem

I would redraw it using only what I need:



We'll say the hypotenuse is x. That is the opposite.
The reference angle is 64.
The adjacent line is 18.1m.

Tan = Opposite / Adjacent
tan64 = x/18.1m
2.05 = x/18.1m
37.11m
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November 21st, 2009, 11:26 PM   #5
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Re: Math problem

Thank you for the help! I just have one "on the side" question ... why does it make sense to multiply 2.05 by 18.1?
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November 22nd, 2009, 12:58 AM   #6
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Because the right-hand side, x/18.1m, when multipled by 18.1m gives x (by the definition of division), and what's done to the right-hand side needs to be done to the left-hand side also.
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November 23rd, 2009, 06:01 PM   #7
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Re: Math problem

Quote:
Originally Posted by Existence
I would redraw it using only what I need:



We'll say the hypotenuse is x. That is the opposite.
No. The hypotenuse is across from the right angle. The other leg (besides the 18.1) is x, the side opposite from the reference angle.
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