JEE MATHEMATICS MCQ: SEQUENCE OF SERIES

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Application +4 | -1

a, b, c, d

are positive real number such that

a+b+c+d=2

, then

M=(a+b)(c+d)

satisfies the relation:

View answer and explanation

Correct option: A

0 < M \leq 1

Option A (

(2 n+1) \frac{\pi}{2}

) is correct because the product of the matrices is a null matrix when

\cos(\theta - \phi) = 0

, which occurs when

\theta - \phi

is an odd multiple of

\frac{\pi}{2}

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