$\"\"$

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From diagram $\"A$ , $\"\"$ and $\"\"$ .

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Find the side $\"\"$ .

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Apply cosines law : $\"a$ .

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Substitute $\"A$ , $\"\"$ and $\"\"$ .

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$\"a$

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$\"a$

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From the trignometric ratio table : $\"italic$ .

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$\"a$

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$\"a$

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$\"a$

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$\"a$

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$\"\"$

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$\"\"$

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$\"\"$

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Find angle $\"\"$ .

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Apply cosines law : $\"b$ .

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Substiute $\"A$ , $\"\"$ and $\"\"$ .

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$\"3$

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$\"9$

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$\"16.424$

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Divide each side by $\"\"$ .

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$\"fraction$

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$\"italic$

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Apply trigonometry inverse property: $\"y$

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$\"B$

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$\"italic$

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$\"B$

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$\"\"$

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Find angle $\"\"$ .

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In $\"\"$ , $\"\"$ .

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$\"\"$

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$\"\"$

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The values of $\"\"$ , $\"B$ and $\"\"$ .