sec^2(x) tan^2(x) + sec^2(x) = sec^4(x)
sin^2 + cos^2 = 1
1+tan^2 = sec^2
1+cot^2 = csc^2
The Attempt at a Solution
First, I changed everything to sin and cos to try and make it clearer.
1/cos^2 * sin^2/cos^2 + 1/cos^2 = sec^4
sin^2/cos^4 + 1/cos^2
Then I multiplied by the common denominator, cos^2
sin^2 * cos^2/cos^6 + cos^2/cos^4
Where do I go from here??