Maths-
General
Easy
Question
In 
- S
- 0


Hint:
In this question we have to use formula 
The correct answer is: 0
In this question we have to find the value of 
Step1: Using formula of Solution of Triangle.
By using Cosine Rule

By putting these values in the given expression.

=>
=>
=>
.
Hence the value of the expression is
.
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