Question

If the area of the triangle on the argand plane formed by the complex numbers – z, iz, z – iz is 600 squnit, then |z| is equal to

• A. 10
• B. 20
• C. 30
• D. None of these

Answer 1

The correct option is B 20

Area of the triangle on the argand plane formed by the complex numbers – z, iz, z – iz is $\frac{3}{2}|z{|}^2\therefore \frac{3}{2}|z{|}^2=600\Rightarrow |z|=20$