Precalculus Examples

Convert from Degrees to Radians sin(390)
Step 1
To convert degrees to radians, multiply by , since a full circle is or radians.

Step 2
Remove full rotations of ° until the angle is between ° and °.
radians
Step 3
The exact value of is .
radians
Step 4
Multiply .
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Step 4.1
Multiply by .
radians
Step 4.2
Multiply by .
radians
radians