Mark the Correct alternative in the following:
In any ∆ABC, (bc cos A + ca cos B + ab cos C) =

By Cosine law,

and and

So,ATQ

Option C

Question

Mark the Correct alternative in the following: In any ∆ABC, (bc cos A + ca cos B + ab cos C) =

Philoid · Accepted Answer

By Cosine law,

and and

So,ATQ

Option C