If x = 2i + 3j + k and y = i + 6j + k, find the direction cosine of x - y:
University of Ilorin MTH103 2025 past question
- (1/√10, -3/√10, 0)
- (1/√10, 3/√10, 0)
- (-1/√10, -3/√10, 0)
- (1/√10, -3/√10, 1/√10)
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