The complex number
Using the triangle inequality, or otherwise, show that
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♦♦♦ Mean mark 27%.
Vectors, EXT2 V1 2021 HSC 16a
- The point
lies on the sphere of radius 1 centred at the origin . - Using the position vector of
, and the triangle inequality, or otherwise, show that . (2 marks)
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- Given the vectors
and , show that -
. (3 marks)
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- As in part (i), the point
lies on the sphere of radius 1 centred at the origin . - Using part (ii), or otherwise, show that
. (2 marks)
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