Trigonometry Examples

$\cos (4 x) (\cos (x) - 1)$

Step 1

Simplify by multiplying through.

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Step 1.1

Apply the distributive property.

$\cos (4 x) \cos (x) + \cos (4 x) \cdot - 1$

Step 1.2

Move $- 1$ to the left of $\cos (4 x)$ .

$\cos (4 x) \cos (x) - 1 \cdot \cos (4 x)$

$\cos (4 x) \cos (x) - 1 \cdot \cos (4 x)$

Step 2

Rewrite $- 1 \cos (4 x)$ as $- \cos (4 x)$ .

$\cos (4 x) \cos (x) - \cos (4 x)$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$