$\"\"$

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The measure are $\"\"$ .

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Apply law of cosines to determine c.

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$\"\"$

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$\"\"$ (Substitute $\"\"$ )

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$\"\"$

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$\"\"$

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$\"\"$

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Take square root each side.

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$\"\"$

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$\"\"$

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$\"\"$

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Find A

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$\"\"$ (Apply Law of sines)

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$\"\"$ (Substitute $\"\"$ )

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$\"\"$

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Apply Cross multiplication $\"\"$ then $\"\"$ .

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$\"\"$

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$\"\"$

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Divide each side by 6.5

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$\"\"$

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$\"\"$

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Apply inverse function.

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$\"\"$

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$\"\"$

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$\"\"$

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The sum of the angle measures of a triangle is $\"\"$ .

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$\"\"$

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$\"\"$ (Substitute $\"\"$ )

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$\"\"$

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Subtract 103 from each side.

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$\"\"$

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$\"\"$

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$\"\"$

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The value of $\"\"$ , $\"\"$ , $\"\"$ .