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JEE MATHEMATICS MCQ: PROPERTIES OF TRIANGLES

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If a2+b2+c2=1a^2+b^2+c^2=1, then ab+bc+caa b+b c+c a lies in the interval :
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Correct option: A
[−12,1]\left[-\frac{1}{2}, 1\right]
Option A ([−12,1]\left[-\frac{1}{2}, 1\right]) is correct because it defines the interval in which the expression ab+bc+caa b+b c+c a lies, given the constraint a2+b2+c2=1a^2+b^2+c^2=1.

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