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Let \vec a = 2\hat i + \hat j - 2\hat k,; \vec b = \hat i + \hat j and \vec c = \vec a * \vec b. Let \vec d be a vector such that |\vec d - \vec a| = √11,; |\vec c * \vec d| = 3 and the angle between \vec c and \vec d is π/4. Then \vec a * \vec d is equal to: | Watch the step-by-step video solution for this NIMCET PYQ.