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## Homework Statement

sec^2(x) tan^2(x) + sec^2(x) = sec^4(x)

## Homework Equations

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??