Vector proof help

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Consider the circle with the centre O and radius O to A = vector a. B and C are points on the circle and B to C = vector b. Which one of the following statements must be true? (A,O and C are collinear)

a= (1/2)b: 0 (0%)
a=-(1/2)b: 0 (0%)
a.b=b.b: 0 (0%)
a.b=a.a: 0 (0%)
2a.b=-b.b: 0 (0%)

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Poll

Consider the circle with the centre O and radius O to A = vector a. B and C are points on the circle and B to C = vector b. Which one of the following statements must be true? (A,O and C are collinear)

Author Topic: Vector proof help (Read 625 times) Tweet Share

dianzhang

Vector proof help

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