Geography, 12.12.2020 15:50 ThePotato381
David proved the Law of Cosines with reference to ∆ABC using a different method. Arrange the steps of his proof in the correct sequence.
(on simplification)
Therefore, .
(on simplification)
Similarly, prove that
and
.
(Transitive Property)
(on simplification)
In ,
(Pythagorean Theorem)
In ,
(Pythagorean Theorem)
Draw a perpendicular, , from B to side AC.
Let and .
Therefore, .
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