\( (\hat{i} + \hat{k}) \) এবং \( \hat{i} \) এর মধ্যবর্তী কোণ কত?

A \( 0^\circ \)

B \( 180^\circ \)

C \( 90^\circ \)

D \( 45^\circ \)

Solution

Correct Answer: Option D

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