Asked by athena
The three runways at the airport in Smallville form a triangle. On a map the runways are 3, 4 and 6 cm long. Find the largest angle created by these runways.
Answers
Answered by
oobleck
use the law of cosines to find θ
6^2 = 3^2 + 4^2 - 2*3*4 cosθ
6^2 = 3^2 + 4^2 - 2*3*4 cosθ
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