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JEE Advanced Mathematics question

MathematicsDeterminantsJEE Advanced

If in a , then

Answer: (A),(B),(D)

Solution

By the sine rule, etc., so the determinant equals . Hence

= 0.

takes out of :

(a+b+c)Missing \end{vmatrix}\begin{vmatrix} 1 & b &

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Question ID VK-110114