Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 Engineering Mathematics Calculus Vector Calculus

The value of cosine of the angle between the x-axis and the vector \(2\hat i + 2\hat j + \hat k\) is:

1
\(\frac{2}{3}\)
2
\(\frac{1}{3}\)
3
\(\frac{1}{2}\)
4
\(\frac{1}{{\sqrt 2 }}\)
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