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1. Find the length of a.
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12 votes
12 votes
1. Find the length of a.

1. Find the length of a.-example-1
User Brendan Green
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1 Answer

16 votes
16 votes
Use Law of Cosines
a^2 = b^2 + c^2 - 2bc*cos(A)
a^2 = 15^2 + 12^2 - 2*12*15*cos(110)
a^2 = 225 + 144 - 360*-0.342
a^2 = 369 + 123.13
a^2 = 492.13
a = 22.18
User Cvetan Mihaylov
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2.5k points
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