sec^(4)theta-sec^(2)theta=?

Find the maximum value of 1-sec^(4)theta-2sec^(2)theta

Find the maximum value of 1-sec^(4)theta-2sec^(2)theta

If : sectheta+costheta=2 "then" : sec^(2)theta-sec^(4)theta=

Prove that 2sec^(2)theta-sec^(4)theta-2csc^(2)theta+csc^(4)theta=(1-tan^(8)theta)/(tan^(4)theta)

Prove that: 2sec^(2)theta-sec^(4)theta-2csc^(2)theta+csc^(4)theta=(1-tan^(8)theta)/(tan^(2)theta)

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

Prove the following identities: 2sec^(2)theta-sec^(4)theta-2cos ec^(2)theta+cos ec^(4)theta=cot^(4)theta-tan^(4)theta

Show: 2sec^(2)theta-sec^(4)theta-2cos ec^(2)theta+cos ec^(4)theta=cot^(4)theta-tan^(4)theta

Prove the following identities: 2sec^(2)theta-sec^(4)theta-2cos ec^(2)theta=cot^(4)theta-tan^(4)theta

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