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NDA 2011
Exam
NDA
Year
2011
Subject
Mathematics
Chapter
Vector Algebra

NDA 2011 · Mathematics · Vector Algebra

What is the sine of angle between the vectors i +2 j +3 k and - i...

What is the sine of angle between the vectors i^+2j^+3k^\hat{i}+2 \hat{j}+3 \hat{k} and −i^+2j^+3k^-\hat{i}+2 \hat{j}+3 \hat{k} ?

Options

  1. A137\sqrt{\frac{13}{7}}
  2. B1317\frac{\sqrt{13}}{17}
  3. C137\frac{13}{\sqrt{7}}
  4. DNone of the above

Correct answer

B. 1317\frac{\sqrt{13}}{17}

Step-by-step solution

The correct answer is option (B).
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