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Mathematics 11 Online
OpenStudy (anonymous):

One point on the surface of a sphere centred at the origin has the coordinates (8, 3, 5). a. Represent the radius that connects this point to the origin as a position vector. b. Determine the angle that this radius makes with each of the coordinate axes. c. Suggest the position vector of a radius of this sphere that lies below the xy-plane.

OpenStudy (loser66):

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