JEE MATHEMATICS MCQ: MULTIPLE AND SUBMULTIPLE ANGLES

1 Easy

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Analyzing +4 | -1

\cos \,\,2B = \frac{{\cos \,\,\left( {A + C} \right)}}{{\cos \,\,\left( {A - C} \right)}}\;

, then

\tan \,\,A,\,\,\tan \,\,B,\,\,\tan \,\,C

are in

View answer and explanation

Correct option: B

The correct answer is B (GP) because after simplification and using trigonometric identities, it's shown that

\tan^2 B = \tan A \tan C

, which is the condition for GP.

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