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Chiomatn93

  • 3 years ago

use the law of cosines to determine the indicated side x or angle theta.

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  1. Chiomatn93
    • 3 years ago
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    |dw:1336619665512:dw|

  2. Chiomatn93
    • 3 years ago
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    Angle A is = 180 degrees in case u cant see the number...

  3. ByteMe
    • 3 years ago
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    If angle A is 180 degrees then that's a straight angle. You don't need the law of cosines. But since your problems says to use it here it is: x^2 = 15^2 + 18^2 - 2*15*18*cos(180) x^2 = 15^2 + 18^2 + 2*15*18

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