JEE MATHEMATICS MCQ: PROPERTIES OF TRIANGLES

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Analyzing +4 | -1

For a triangle

A B C

, the value of

\cos 2 A+\cos 2 B+

\cos 2 C

is least. If its inradius is 3 and incentre is

M

, then which of the following is NOT correct?

View answer and explanation

Correct option: C

Area of

\Delta A B C

\frac{27 \sqrt{3}}{2}

Option C (Area of

\Delta A B C

\frac{{27 \sqrt{{3}}}}{{2}}

) is correct because the area of an equilateral triangle with inradius 3 is

27\sqrt{3}

, not

\frac{{27 \sqrt{{3}}}}{{2}}

More Questions from PROPERTIES OF TRIANGLES

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\tan A

A

2 s