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capooza

  • 4 years ago

Using the law of cosines (trig), find the measures of a triangle that has a=10, b=12, and c=15.

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  1. Mertsj
    • 4 years ago
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    \[C=85.5\]\[225-244=-240cosC\]\[15^{2}= 10^{2}+12^{2}-2(10)(12)cosC\]\[C=85.5\

  2. Mertsj
    • 4 years ago
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    Read the steps in reverse order.

  3. capooza
    • 4 years ago
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    thank you so much!

  4. Mertsj
    • 4 years ago
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    yw

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