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)
(Transitive Property)
Similarly, prove that
and
.
(on simplification)
In ,
(Pythagorean Theorem)
In ,
(Pythagorean Theorem)
Draw a perpendicular, , from B to side AC.
Let and .
Therefore, .
