defence exam Agniveer Vayu Group X & XY Mock Test 01/2026 Mathematics Vector Algebra Applications of Vectors
What is the interior acute angle of the parallelogram whose sides are represented by the vectors \(\frac{1}{{\sqrt {2} }}{\rm{\hat i}} - \frac{1}{{\sqrt 2 }}{\rm{\hat j}} + {\rm{\hat k}}\) and \(\frac{1}{{\sqrt {2} }}{\rm{\hat i}} + \frac{1}{{\sqrt 2 }}{\rm{\hat j}} + {\rm{\hat k}}\)?
1
60°
2
45°
3
30°
4
15°