JEE Mains 1-Feb-2023 Shift 1 Solved Paper

Section: Mathematics

Question : 67 of 90

Marks: +1, -0

For a triangle ABC, the value of cos‌2‌A+cos‌2‌B+cos‌2‌C is least. If its inradius is 3 and incentre is M, then which of the following is NOT correct?

[1-Feb-2023 Shift 1]

Perimeter of △ABC is 18√3
sin‌2A+sin‌2B+sin‌2C=sin‌A+sin‌B+sin‌C
→
MA
⋅
→
MB
=−18
area of △ABC is ‌
27√3
2

Validate

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