Convert from Degrees to Radians -18 degrees

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Trigonometry

$- 18 °$

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

$- 18 ° \cdot \frac{π}{180 °}$ radians

Cancel the common factor of $18$ .

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Factor $18$ out of $- 18$ .

$18 (- 1) \cdot \frac{π}{180}$ radians

Factor $18$ out of $180$ .

$18 \cdot - 1 \cdot \frac{π}{18 \cdot 10}$ radians

Cancel the common factor.

$18 \cdot - 1 \cdot \frac{π}{18 \cdot 10}$ radians

Rewrite the expression.

$- 1 \cdot \frac{π}{10}$ radians

Rewrite $- 1 \frac{π}{10}$ as $- \frac{π}{10}$ .

$- \frac{π}{10}$ radians

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Name

Name	one hundred fifty-eight million six hundred ninety-six thousand seven hundred twelve

Interesting facts

158696712 has 64 divisors, whose sum is 793484640
The reverse of 158696712 is 217696851
Previous prime number is 3

Basic properties

Is Prime? no
Number parity even
Number length 9
Sum of Digits 45
Digital Root 9

Name

Name	one billion eight hundred twenty-three million seven hundred eighteen thousand eight hundred fifty

Interesting facts

1823718850 has 16 divisors, whose sum is 3291694200
The reverse of 1823718850 is 0588173281
Previous prime number is 365

Basic properties

Is Prime? no
Number parity even
Number length 10
Sum of Digits 43
Digital Root 7

Name

Name	nine hundred eighty-five million three hundred eighty-one thousand six hundred sixty-four

Interesting facts

985381664 has 128 divisors, whose sum is 7485488640
The reverse of 985381664 is 466183589
Previous prime number is 4583

Basic properties

Is Prime? no
Number parity even
Number length 9
Sum of Digits 50
Digital Root 5

Find Amplitude, Period, and Phase Shift f(t)=25sin(160pit)+115

Factor sin(theta)

Graph f(t)=nsin(pit-pi)+pi

Find the Inverse f(x)=3sin(4x)

Simplify 45 degrees