JEE MATHEMATICS MCQ: TRIGONOMETRY RATIOS

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Application +4 | -1

If in a

\triangle A B C,(a+b+c)(b+c-a)=\lambda b c

, then

View answer and explanation

Correct option: D

0<\lambda<4

Option D (

0<\lambda<4

) is correct because the given equation can be transformed to relate

\lambda

\cos A

, and the range of

\cos A

restricts the possible values of

\lambda

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