Let `z=costheta+isintheta`. Then the value of `sum_(m->1-15)Img(z^(2m-1))` at `theta=2^@` is:

Let z=cos theta+i sin theta. Then the value of sum_(m rarr1-15)Img(z^(2m-1)) at theta=2^(@) is: 1.(1)/(sin2^(@)) 2.(1)/(3sin2^(@))3*(1)/(sin2^(@))4*(1)/(4sin2^(@))

Let z=cos theta+i sin theta then the value of sum_(m=1)^(30)Im(z^(2m-1)) at theta=2^(@) is.

If z=costheta+isintheta then find (1+z)/(1-z)

Convert z=2/(1+costheta+isintheta) in a+ib form

Convert Z=1/(costheta-isintheta) in a+ib form

If zne0and2+costheta+isintheta=3//z then find the value of 2(z+barz)-|z|^(2)

Re{(1+costheta+2iSintheta)^-1}=4 then find theta

If pi lt theta lt 2pi and z=1+costheta+isintheta , then find the value of |z|.