Finding modulus and argument of complex number (x+iy)
Draw argand diagram
Modulus=|z|= length of the line
So |z|=(x2+y2)0.5
Argument=Angle between real (x axis) and line
so arg(z)=arctan(y/x)
EF
Answered by Emma F. • Further Mathematics tutor
7248 Views
See similar Further Mathematics A Level tutorsRelated Further Mathematics A Level answers
All answers ▸A curve has the equation (5-4x)/(1+x)
How do I do a proof by induction?
Let E be an ellipse with equation (x/3)^2 + (y/4)^2 = 1. Find the equation of the tangent to E at the point P where x = √3 and y > 0, in the form ax + by = c, where a, b and c are rational.
Solve x^3=1 giving all the roots between -pi<=theta<=pi in exponential form