" 7."9sec^(2)theta-9tan^(2)theta=

Prove that: 9sec^(2)theta-5tan^(2)theta=5+4sec^(2)theta

If sec^(2)theta+tan^(2)theta=(7)/(12) , then sec^(4)theta-tan^(4)theta=?

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 sec^(2)theta+tan^(2)theta=7 , then the value of theta

9tan^(2)theta-9Sec^(2)theta=?

The number of roots of the equation 16sec^(3)theta-12tan^(2)theta-4sec theta=9 in interval (-pi,pi) .

Find the number of roots of the equation 16 sec^(3) theta - 12 tan^(2) theta - 4 sec theta =9 in interval (-pi,pi)

Find the number of roots of the equation 16 sec^(3) theta - 12 tan^(2) theta - 4 sec theta =9 in interval (-pi,pi)

Find the number of roots of the equation 16 sec^(3) theta - 12 tan^(2) theta - 4 sec theta =9 in interval (-pi,pi)