If \\alpha, \\beta and \\gamma are length of the altitudes of a \\DeltaA B C with area \\Delta, then {\\Delta^{2}}/{R^{2}}({1}/{\\alpha^{2}}+{1}/{\\beta^{2}}+{1}/{\\gamma^{2}}) is equal to

Correct Answer is : sin2A+sin2B+sin2C

\sin ^{2} A+\sin ^{2} B+\sin ^{2} C

\cos ^{2} A+\cos ^{2} B+\cos ^{2} C

\tan ^{2} A+\tan ^{2} B+\tan ^{2} C

\cot ^{2} A+\cot ^{2} B+\cot ^{2} C

AP EAMCET Engineering 2012 Solved Paper

Section: Mathematics

Question : 158 of 160

Marks: +1, -0

If α,β and γ are length of the altitudes of a ΔABC with area Δ, then

Δ2

(

α2

β2

γ2

) is equal to

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