Area of triangle when two sides and angle given but not in between the two sides

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What should be the formula to replace area of triangle.

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2 Answers

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Hint to get you started:

• First use the formula for the area of triangle

$$\frac12 ab \sin \theta$$ to determine one of the unknown side.

• After that use a different formula to determine $x$.

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As per @Siong comment, this is my answer.

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