The value of `2sintheta` can be `a+1/a`, where `a` is a positive number and `ane1`.

Put the complex number (1+7i)/((2-i)^2) in the form r(costheta+i\ sintheta) , where r is a positive real number and -pilttheta le pi .

The value of log_(a)1+log_(2)2^(2) + log_(3)3^(3) (where a is a positive number and a ne 1 ) is ______.

The value of (sintheta)/(1+costheta)+(sintheta)/(1-costheta) is :

The value of (n!)^(n) if n+(n-1)+(n-2)=n(n-1)(n-2) where n^(3)>9, a positive number is

If sintheta+costheta=1 , then the value of sin2theta is