" 3.If "n" is an integer and "z=cis theta,(theta!=(2n+1)(pi)/(2))," then show that "(z^(2n)-1)/(z^(2n)+1)=i tan t

If n is an integer and z=cis theta,(theta ne (2n+1)pi/2), then show that (z^(2n)-1)/(z^(2n)+1)=i tan n theta) .

If n is integer and z = cis theta, ( theta ne ( 2n + 1) pi//2) , then show that (z ^(2n) -1)/(z^(2n) +1) = i tan n theta .

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

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

If n is an integer and z=-1+isqrt3," then "z^(2n)+2^(n).z^(n)+2^(2n)

If n (ne 3) is an integer and z = -1 + isqrt3 , then z^(2n) + 2^(n) , z^(n) + 2^(2n) =

If |2 sin theta-cosec theta| ge 1 and theta ne (n pi)/2, n in Z , then

If |2 sin theta-cosec theta| ge 1 and theta ne (n pi)/2, n in Z , then

If |2 sin theta - cos ec theta| ge 1 and theta ne (n pi)/(2), n in Z , then