If `cos^4 theta sec^2 alpha,1/2` and `sin^4 theta cosec^2 alpha` are in `A.P.`, then `cos^8 theta sec^6 alpha ,1/2` and `sin^8 theta cosec^6 alpha` are

If cos^(4)theta sec^(2)alpha,(1)/(2) and sin^(4)theta cos ec^(2)alpha are in A.P.,then cos^(8)theta sec^(6)alpha,(1)/(2) and sin^(8)theta cos ec^(6)alpha are

If sec ( theta + alpha ) , sec theta , sec (theta - alpha ) are in A.P. Then cos theta sec alpha //2=

If cos (theta - alpha) , cos theta , cos (theta + alpha ) are in H.P. then cos theta .sec"" (alpha )/(2) =

If sec ( theta - alpha ) , sec theta , sec ( theta + alpha ) are in A.P. then cos theta =

If cos(theta-alpha),cos theta,cos(theta+alpha) are in H.P. then cos theta.(sec(alpha))/(2)=

If cos(theta-alpha),costheta,cos(theta+alpha) are in H.P., then costheta sec""(alpha)/(2)=?

If cos(theta - alpha) , costheta , cos(theta + alpha) are in H.P. then costheta.sec(alpha/2) =

If cos(theta - alpha) , costheta , cos(theta + alpha) are in H.P. then costheta.sec(alpha)/2 =

If sec(2 theta-2 alpha),(1)/(2)cos ec^(2)theta,sec(2 theta+2 alpha) are in H.P. then