JEE MATHEMATICS MCQ: TRIGONOMETRIC EQUATIONS

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Analyzing +4 | -1

A, B

and

C

are the angles of a triangle such that

\sec (A-B), \sec A

and

\sec (A+B)

are in AP, then

View answer and explanation

Correct option: B

2 \sec ^2 A=\sec ^2 \frac{B}{2}

Option B (

2 \sec^2 A = \sec^2 \frac{{B}}{{2}}

) is correct because using the arithmetic progression condition and trigonometric identities leads to this relationship.

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