" 7.The expression tan "^(2)alpha+cot^(2)alpha" ,is "

The expression tan^2alpha+cot^2alpha is

The expression (1 + sin 2 alpha )/( cos (2 alpha - 2pi) tan (alpha - (3pi)/(4 ))) -1/4 sin 2 alpha [ cot "" (alpha )/(2) + (alpha )/(2))] when simplified reduces to

If tan alpha + cot alpha=2 , then the value of tan^(13) alpha +cot^(13) alpha is

The expression (tan alpha+tan beta)cot(alpha+beta)+(tan alpha-tan beta)cot(alpha-beta) is independent of both alpha and beta.

If tan alpha + cot alpha =2 , then tan^(20)alpha + cot^(20)alpha=

The expression (1+sin2 alpha)/(cos(2 alpha-2 pi)tan(alpha-3((pi)/(2))))-(1)/(4)sin2 alpha(cot((alpha)/(2))+cot(3((pi)/(2))+(alpha)/(2))) when simplified reduces to

if tan alpha+cot alpha=p then find the value of a.tan^(2)alpha+cot^(2)alpha b.tan^(3)alpha+cot^(3)alpha