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NDA 2014
Exam
NDA
Year
2014
Subject
Mathematics
Chapter
Vector Algebra

NDA 2014 · Mathematics · Vector Algebra

If | a |=2,| b |=5 and | a × b |=8 , then what is a · b equal to?

If ∣a⃗∣=2,∣b⃗∣=5|\vec{a}|=2,|\vec{b}|=5 and ∣a⃗×b⃗∣=8|\vec{a} \times \vec{b}|=8, then what is a⃗⋅b⃗\vec{a} \cdot \vec{b} equal to?

Options

  1. A6
  2. B7
  3. C8
  4. D9

Correct answer

A. 6

Step-by-step solution

The correct answer is option (A)
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