Precalculus Examples

Convert from Degrees to Radians
45
Step 1
To convert degrees to radians, multiply by π180°, since a full circle is 360° or 2π radians.
45°π180° radians
Step 2
Cancel the common factor of 45.
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Step 2.1
Factor 45 out of 180.
45π45(4) radians
Step 2.2
Cancel the common factor.
45π454 radians
Step 2.3
Rewrite the expression.
π4 radians
π4 radians
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 [x2  12  π  xdx ] 
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