Question

The point represented by the complex number 2 - i is rotated about origin through 90 degree in clockwise direction the new position of the point is​

Answer 1

Answer:

In clockwise rotation about origin through 90° then -i multiply in complex no. so,

new position of point is

$- i(2 - i) = - 2i + {i}^{2} = - 1 - 2i$