Question

in ∆abc, ab=6√7cm and BC=24cm & CA=18cm. the angle A is​

Answer 1

Answer:

90°

Step-by-step explanation:

cos A = (6√7)^2 + (18)^2 - (24)^2]/2×6√7×18

cosA = 0 => A = 90°

thus formed triangle will be an right angle triangle.

Answer 2

Step-by-step explanation:

In ABC

(AB)^2+(CA)^2=576=(BC)^2

therefore Triangle ABC is a Right angled Triangle rt.angled at A

So Angle A = 90

Hope it helps you..

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