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Use the Law of Cosines to solve the triangle. Round your answer to two decimal places.

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Use the Law of Cosines to solve the triangle. Round your answer to two decimal places.

law-of-cosines
solve-triangle

asked Jan 23, 2015 in TRIGONOMETRY by anonymous

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1 Answer

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Step 1 :

The three sides are .
Law of cosines for : .

Substitute the values in the above equation.

.

Step 2 :

Law of cosines for : .

Substitute corresponding values.

.

Step 3 :

Law of cosines for : .

Substitute corresponding values.

.

Solution :

The three angles are , and .

answered Jan 23, 2015 by lilly Expert

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