precalc part 2

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sin^2x + cos^2x

sin^2x + cos^2x

1

sin^2x

1-cos^2x

cos^2x

1-sin^2x

tan^2x +1

sec^2x

sec^2x - tan^2x

1

tan^2x

sec^2x - 1

tan^2x - sec^2x

-1

1 + cot^2x

csc^2x

csc^2x - cot^2x

1

csc^2x - 1

cot^2x

cot^2x - csc^2x

-1