complex numbers introduction

• In the first quadrant

• In the second quadrant

• In the third quadrant

• In the fourth quadrant

The modulus of a complex number is:

• the distance of the complex number from the origin

• the angle measured anticlockwise from the horizontal axis

• the remainder after dividing by a factor

• the polar form of a complex number

The argument measures the angle

• clockwise from the y-axis

• anti clockwise from the y-axis

• anti clockwise from the x-axis

• clockwise from the x-axis

For the number -1+5i the argument measured in degrees would be

• between 0 and 90°

• between 0 and -90°

• between 90° and 180°

• between -90° and -180°

Find the right Argand's Diagram for z = 4 - 8i

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Write the complex number in modulus argument form

• √50 (cos π/2 + i sin π/2)

• 50 (cos π/4 + i sin π/4)

• √50 (cos 5π/4 + i sin 5π/4)

• √50 (cos π/4 + i sin π/4)