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chrisplusian

  • one year ago

Determine the resultant force for P and T by the geometric solution (using sine and/or cosine law).

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  1. chrisplusian
    • one year ago
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  2. chrisplusian
    • one year ago
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    I am able to determine the simple things but I can't see how to find the third angle. Since it is not a right triangle I can't use pythagorean, and I don't have enough information to use law of sines, or cosines. The only thing I could think of is somehow converting the T= 600lb into ft somehow (but it does not seem possible)

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  3. amistre64
    • one year ago
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    D= 90?

  4. amistre64
    • one year ago
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    if so, then we know BD and DC, and AC is given knowing AD and BD. if D is a right triangle, gives you the 2 legs of a right triangle and the trig functions can all be ratioed

  5. chrisplusian
    • one year ago
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    How would we know AD?

  6. amistre64
    • one year ago
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    |dw:1441655208932:dw|

  7. amistre64
    • one year ago
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    AD = 3 + y, and we can determine y if D is a rt angle

  8. chrisplusian
    • one year ago
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    I see let me try from there

  9. chrisplusian
    • one year ago
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    Got it..... I don't see things like that naturally.

  10. amistre64
    • one year ago
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    :)

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