$\"\"$

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Observe the triangle figure, the side $\"\"$ and angles are $\"\"$ .

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In a triangle, the total of three angles is $\"\"$ .

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$\"\"$

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

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$\"\"$ (Subtract $\"\"$ from each side) $\"\"$

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$\"\"$ (Write the law of sines)

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

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To find the a then $\"\"$ .

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$\"\"$ (Divide each side by $\"\"$ )

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$\"\"$ (Use calculator)

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$\"\"$ (Simplify) $\"\"$

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To find the a then $\"\"$ .

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$\"\"$ (Divide each side by $\"\"$ )

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$\"\"$ (Use calculator)

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$\"\"$ (Simplify) $\"\"$

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The solutions are $\"\"$ .