Trigonometry Examples

$- \cos (x) \cdot \cos (x)$

Step 1

Raise $\cos (x)$ to the power of $1$ .

$- (\cos^{1} (x) \cos (x))$

Step 2

Raise $\cos (x)$ to the power of $1$ .

$- (\cos^{1} (x) \cos^{1} (x))$

Step 3

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$- {\cos (x)}^{1 + 1}$

Step 4

Add $1$ and $1$ .

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