Question

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, .

Answer 1

image of solution attached below