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Math Help - Trig Problem help!

  1. #1
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    Trig Problem help!

    Hello, I need some help with a trig problem. I drew a simple picture in pain to make it easier than me explaining it.
    i appreciate the help
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  2. #2
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    Hello, meh288!

    You don't need trig for this one . . .


    Code:
                                          *
                                      *   |
                                  *       |
                              *           |
                          *               | 20
                      *   |               |
                  *       |6.5            |
              *           |               |
          * - - - - - - - + - - - - - - - *
          : - - - x - - - :
          : - - - - - - - - 25  - - - - - :
    Find x.

    From the similar right triangles, we have: . \frac{x}{6.5} \:=\:\frac{25}{20}

    Got it?

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  3. #3
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by meh288 View Post
    Hello, I need some help with a trig problem. I drew a simple picture in pain to make it easier than me explaining it.
    i appreciate the help
    we have similar triangles here. x is the base of the small triangle and 6.5 is the height. also, 25 is the base of the large triangle and 20 is the height. since these are similar triangles, their side lengths and angles are proportional, thus we can set up ratios.

    \frac {\mbox{Base of small triangle}}{\mbox{Height of small triangle}} = \frac {\mbox{Base of large triangle}}{\mbox{Height of large triangle}}

    can you continue? just plug in the corresponding numbers and solve for x (EDIT: oh, Soroban did that for you already)


    EDIT: wow, beaten by Soroban, and he took time to draw the diagram!
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  4. #4
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    thanks

    thanks alot guys, I got it now
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  5. #5
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by meh288 View Post
    thanks alot guys, I got it now
    you're very much welcome
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