$\"\"$

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The measure are $\"\"$ .

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Apply law of sines to determine C.

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Find C

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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 12.

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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 78 from each side.

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$\"\"$

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$\"\"$

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$\"\"$

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Find b,

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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 0.6946.

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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