Question

In triangle Abc ab=6√7cm and Bc =24cm and Ca=18cm.then angle A is

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

Angle A is a right angle

Step-by-step explanation:

We have, AB=6√7 cm

BC= 24cm.

CA=18cm

Now, In ∆ABC, we have:

AB²+AC²

=(6√7)²+18²

=(252+324)

=576.

=(24)²

=BC².

So, in triangle ABC we have sides AB, BC, CA such that: BC²=AB²+AC².

.°. By converse of Pythagoras Theorem,

∆ABC is right angled at A, i.e., angle A is right angle.(Ans.)