Recent content by palgun kumar

square root of -1 is 1 with angle of 90 degrees or 1 with angle of -90 degrees

it is given that e^jwt=cos(wt)+jsin(wt)... but j=1 with angle 90 degrees..now by multiplying any function by j means multiplying the magnitude by 1 and phase change of 90 degree... so, jsin(wt)=sin(wt)*1 with angle 90 degrees = sin(wt+90) =cos(wt)...