Trigonometry Examples

$\cos (64) = \frac{y}{8}$

Step 1

Rewrite the equation as $\frac{y}{8} = \cos (64)$ .

$\frac{y}{8} = \cos (64)$

Step 2

Multiply both sides of the equation by $8$ .

$8 \frac{y}{8} = 8 \cos (64)$

Step 3

Simplify both sides of the equation.

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Step 3.1

Simplify the left side.

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Step 3.1.1

Cancel the common factor of $8$ .

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Step 3.1.1.1

Cancel the common factor.

$8 \frac{y}{8} = 8 \cos (64)$

Step 3.1.1.2

Rewrite the expression.

$y = 8 \cos (64)$

$y = 8 \cos (64)$

$y = 8 \cos (64)$

Step 3.2

Simplify the right side.

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Step 3.2.1

Simplify $8 \cos (64)$ .

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Step 3.2.1.1

Evaluate $\cos (64)$ .

$y = 8 \cdot 0.43837114$

Step 3.2.1.2

Multiply $8$ by $0.43837114$ .

$y = 3.50696917$

$y = 3.50696917$

$y = 3.50696917$

$y = 3.50696917$

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