Let `p=4 sec^2 theta+cos^2 theta and q=cosec^2 phi + 4sin^2 phi,` then find the minimum value of `(p+q).`

p=4sec^(2)theta+cos^(2)theta and q-cos ec^(2)phi+4sin^(2)theta phi then find the minimum value of (p+q)

If " "sec theta = 5/4, "cosec" phi = 13/12 " then find the value of " sec ( theta + phi).

If p sec theta+q tan theta=1 and p^(2)sec^(2)theta-q^(2)tan^(2)theta=5 then find the value of (9p^(-2)-4q^(-2))

IF tan^2 theta=2 tan^2 phi +1 then find the value of cos 2 theta+sin^2 phi .

If sin theta+cos theta=p and sec theta+cos ec theta=q find q(p^(2)-1)=

cos 2theta cos 2phi + sin^(2) (theta - phi ) - sin^(2) ( theta + phi) is equal to