Law of Sines and Cosines

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9 Terms

1
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When do we use law of sines and cosines?

When we dont have a right triangle

2
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Law of sines

sinA/a = sinB/b = sinC/c

3
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what do we use to find the angle missing in law of sines

sin inverse

4
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What do we do to solve when the side is missing in law of sines

cross multiplication

5
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Law of cosines a2

a2 = b2+c2-2bc(cosA)

6
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Law of cosines b2

b2 = a2+c2-2ac(cosB)

7
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Law of cosines c2

c2 = a2+b2-2ab(cosC)

8
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When do we use law of cosines?

When given SSS or SAS

9
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When do we use law of sines?

When given SSA or AAS