In , with usual notations, if a^ 4 +b^ 4 +c^ 4 -2a^ 2 c^ 2 -2c^ 2 b^ 2 =0, then C= .

MHT CET 2025 Mathematics question

Not in JEE syllabus

In ABC, with usual notations, if , then

Answer: (A)

Note . So the given relation is , i.e. and . By the cosine rule $

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Question ID VK-102295