Trigonometry Examples

$1 - \sec^{2} (x)$

Step 1

Simplify with factoring out.

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Step 1.1

Reorder $1$ and $- \sec^{2} (x)$ .

$- \sec^{2} (x) + 1$

Step 1.2

Factor $- 1$ out of $- \sec^{2} (x)$ .

$- (\sec^{2} (x)) + 1$

Step 1.3

Rewrite $1$ as $- 1 (- 1)$ .

$- \sec^{2} (x) - 1 \cdot - 1$

Step 1.4

Factor $- 1$ out of $- \sec^{2} (x) - 1 \cdot - 1$ .

$- (\sec^{2} (x) - 1)$

Step 2

Apply pythagorean identity.

$- \tan^{2} (x)$