Trigonometry Examples

$\arccos (\frac{2.3}{2.8})$

Step 1

To convert radians to degrees, multiply by $\frac{180}{π}$ , since a full circle is $360 °$ or $2 π$ radians.

$(\arccos (\frac{2.3}{2.8})) \cdot \frac{180 °}{π}$

Step 2

Divide $2.3$ by $2.8$ .

$\arccos (0.82142857) \cdot \frac{180}{π}$

Step 3

Evaluate $\arccos (0.82142857)$ .

$0.60688491 \cdot \frac{180}{π}$

Step 4

Multiply $0.60688491 \frac{180}{π}$ .

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Step 4.1

Combine $0.60688491$ and $\frac{180}{π}$ .

$\frac{0.60688491 \cdot 180}{π}$

Step 4.2

Multiply $0.60688491$ by $180$ .

$\frac{109.23928392}{π}$

Step 5

Replace $π$ with an approximation.

$\frac{109.23928392}{3.14159265}$

Step 6

Divide $109.23928392$ by $3.14159265$ .

$34.77194403$

Step 7

Convert to a decimal.

$34.77194403 °$