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

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

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

(1-cos^2theta)sec^2 theta= tan^2 theta

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

If sec(theta-alpha), sectheta and sec(theta+alpha) are in AP, where cos alpha ne 1 then what is the value of sin^2 theta + cos alpha ?

If cos(theta-alpha),costheta,cos(theta+alpha) are in H.P.,then costhetasec(alpha//2) is equal to

Prove: (sec^(2)theta-1)(cos ec^(2)theta-1)=1

(cos ec^(2)theta-sec^(2)theta)/(cos ec^(2)theta+sec^(2)theta)=(3)/(4)

Prove :cos ec^(2)theta+sec^(2)theta=cos ec^(2)theta sec^(2)theta