If \A+\B+\C=\frac{\\pi}{2} then

Correct Answer is : All three are correct

\tan \A \tan \B+\tan \B \tan \C+\tan \C \tan \A =1

\cot \A+\cot \B+\cot \C =\cot \A \cot \B \cot \C

\cos 2 \A+\cos 2 \B+\cos 2 \C =1+4 \sin \A \sin \B \sin C

BITSAT 2021 Paper

Section: Mathematics

Question : 137 of 150

Marks: +1, -0

If A+B+C=

then

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