JEE MATHEMATICS MCQ: SEQUENCE OF SERIES

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{a^2},{b^2},{c^2}

are in AP, then which of the following is also an AP?

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Correct option: C

\cot A,\cot B,\cot C

Option C (

\cot A,\cot B,\cot C

) is correct because if

{a^2},{b^2},{c^2}

are in AP, then

\cot A,\cot B,\cot C

are also in AP, which can be derived using trigonometric identities and the sine rule.

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