" n.If "alpha=(pi)/(7)" then find the value of "((1)/(cos alpha)+(2cos alpha)/(cos2 alpha))

If alpha=(pi)/(31) then find the value of (1)/(4)[(1)/(cos alpha)+(2cos alpha)/(cos2 alpha)+(4cos3 alpha)/(cos4 alpha)+(8cos7 alpha)/(cos8 alpha)]

If alpha=pi/7 then find the value of (1/cosalpha+(2cosalpha)/(cos2alpha))

If alpha=pi/7 then find the value of (1/cosalpha+(2cosalpha)/(cos2alpha))

If alpha=(pi)/(23) then the value of (cos10 alpha-cos22 alpha)/(cos10 alpha-cos24 alpha) is equal to

If alpha =(pi)/(18) radian then the value of (cos alpha + cos 2 alpha+ cos 3 alpha +…+ cos 18 alpha) is-

Find the value of sin^6 alpha+ cos^6 alpha+ 2sin^2 alpha cos^2 alpha .

If cos 5 alpha=cos^5 alpha, where alpha in (0,pi/2) then find the possible values of (sec^2 alpha+cosec^2 alpha+cot^2 alpha).

If cos 5 alpha=cos^5 alpha, where alpha in (0,pi/2) then find the possible values of (sec^2 alpha+cosec^2 alpha+cot^2 alpha).

If alpha=(pi)/(17), show that (cos alpha cos13 alpha)/(cos3 alpha+cos5 alpha)=-(1)/(2)

If sec^(2)alpha+cos^(2)alpha=2 , then find the value of sec alpha+ cos alpha .