Test SeriesFree PYQsExamsPricing

JEE Advanced Mathematics question

MathematicsVector AlgebraJEE Advanced

If then is equal to

Answer: (A)

Solution

is perpendicular to both and , so gives and . By Lagrange's identity,

(×)·(×

See the full step-by-step solution

Create a free account to read the complete working (2 steps), and practise questions like this in a timed test.

Create a free account

Question ID VK-109678