Maths-
General
Easy
Question
In 
Hint:
In the given question we will first use the sine rule
. Then after putting the value of a, b and c in terms of sin we will simplify using the trigonometric identities.
The correct answer is:
By the sine rule, we have
let =k
a = k sin A, b =k sin B and c = k sin C
Now, 
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