Trigonometry Examples

$\frac{9 π}{8}$

Step 1

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

$(\frac{9 π}{8}) \cdot \frac{180 °}{π}$

Step 2

Cancel the common factor of $π$ .

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Step 2.1

Factor $π$ out of $9 π$ .

$\frac{π \cdot 9}{8} \cdot \frac{180}{π}$

Step 2.2

Cancel the common factor.

$\frac{π \cdot 9}{8} \cdot \frac{180}{π}$

Step 2.3

Rewrite the expression.

$\frac{9}{8} \cdot 180$

Step 3

Cancel the common factor of $4$ .

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Step 3.1

Factor $4$ out of $8$ .

$\frac{9}{4 (2)} \cdot 180$

Step 3.2

Factor $4$ out of $180$ .

$\frac{9}{4 \cdot 2} \cdot (4 \cdot 45)$

Step 3.3

Cancel the common factor.

$\frac{9}{4 \cdot 2} \cdot (4 \cdot 45)$

Step 3.4

Rewrite the expression.

$\frac{9}{2} \cdot 45$

Step 4

Combine $\frac{9}{2}$ and $45$ .

$\frac{9 \cdot 45}{2}$

Step 5

Multiply $9$ by $45$ .

$\frac{405}{2}$

Step 6

Convert to a decimal.

$202.5 °$