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Let \(\theta\) be the angle between two unit vectors \(\hat{\mathrm{a}}\) and \(\hat{\mathrm{b}} \operatorname{such}\) t…

Q1

Let \(\theta\) be the angle between two unit vectors \(\hat{\mathrm{a}}\) and \(\hat{\mathrm{b}} \operatorname{such}\) that \(\sin \theta=\frac{3}{5}\). Then, \(\hat{a} \cdot \hat{b}\) is equal to :

a

\(\pm \frac{3}{5}\)

b

\(\pm \frac{3}{4}\)

c

\(\pm \frac{4}{5}\)

d

\(\pm \frac{4}{3}\)

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