JEE MATHEMATICS MCQ: SEQUENCE OF SERIES

1 Easy

1 of 1

Application +4 | -1

Let

\bar{a}, \bar{b}, \bar{c}

be three unit vectors such that

\bar{a}

is perpendicular to the plane of

\bar{b}

and

\bar{c}

. If the angle between

\bar{b}

and

\bar{c}

\pi / 3

then

|\bar{a} \times \bar{b}-\bar{a} \times \bar{c}|^2

is equal to

View answer and explanation

Correct option: A

Option A (1) is correct because the magnitude squared of the cross product simplifies to 1 using the given conditions.

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