[" If "z=cos theta+i sin theta" then "],[(z^(2n)-1)/(z^(2n)+1)=]

If n is an integer and z=cos theta+i sin theta , then (z^(2 n)-1)/(z^(2 n)+1)=

If z=cos theta+i sin theta, then the value of (z^(2n)-1)/(z^(2n)+1)(A)i tan n theta(B)tan n theta(C)i cot n theta(D)-i tan n theta

If z= costheta+isintheta , then the value of (z^(2n)-1)/(z^(2n)+1) (A) i tan n theta (B) tan n theta (C) icot n theta (D) -i tan n theta

If z = 1 - cos theta + i sin theta , then |z| =

If z+1/z=2cos theta, prove that |(z^(2n)-1)/(z^(2n)+1)|=|tan n theta|

If z= (cos theta, sin theta) , find (z-(1)/(z))

If z = (cos theta, sin theta) , find (z - 1/z)