SOLUTION: A triangle is defined by the three points: A= (6,9) B= (9,8) C= (5,4) Determine all three angles in the triangle (in radians). θa= θb= θc=

Algebra ->  Matrices-and-determiminant -> SOLUTION: A triangle is defined by the three points: A= (6,9) B= (9,8) C= (5,4) Determine all three angles in the triangle (in radians). θa= θb= θc=      Log On


   



Question 1058400: A triangle is defined by the three points:
A= (6,9)
B= (9,8)
C= (5,4)
Determine all three angles in the triangle (in radians).
θa=
θb=
θc=

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
A triangle is defined by the three points:
A= (6,9)
B= (9,8)
C= (5,4)
Determine all three angles in the triangle (in radians).
----------
Find the 3 side lengths.
Use the Cosine Law.
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It's arithmetic, I don't need the practice.