[" Question "6.],[tan(theta)/(2)=sqrt((1-varepsilon)/(1+e))tan(alpha)/(2)," then the value of "cos alpha" is "]

If tan((theta)/(2))=sqrt((1-e)/(1+e))tan((alpha)/(2)) then cos alpha=

If tan ((theta)/(2))= sqrt((1-e)/(1+e)) tan(( alpha)/(2)) then cos alpha=

If tan""((theta)/(2))=sqrt([(1-e)/(1+e)]) tan""((alpha)/(2)) then cos alpha=

If tan alpha= sqrt2-1 then the value of tan alpha-cot alpha = ?

If tan alpha.tan2alpha = 1 then find the value of cos2alpha .

If tan(theta)/(2)=sqrt((1-e)/(1+e))tan(alpha)/(2), then cos alpha=1-e cos(cos theta+e)(b)(1+e cos theta)/(cos theta-e)(c)(1-e cos theta)/(cos theta-e) (d) (cos theta-e)/(1-e cos theta)

If cot^(-1)(sqrt(cos1))-tan^(-1)(sqrt(cos1))=alpha then the value of sin alpha is -

If tan alpha = sqrt3+2 , then the value of tan alpha - cot alpha is

If sin theta=3sin(theta+2 alpha), then the value of tan(theta+alpha)+2tan alpha is