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IN MATH: 1. n, an angle measure (symbol rad may be used, though no symbol is needed).
EX. A right angle (90°) measures radians, 1.57079632679489... radians.
EX. Simplify .

IN MATH: 2. n. 1 radian is a constant, like pi, and e, and the square root of 2.  It is about 57.3, but is irrational like the other constants listed here. It divides the circle into nice, simple, pieces. Angle measures need not be written in degrees, but may be written as numbers.

    Turn a fraction to a decimal as in: 1/2= .5, 1/4 = .25
/
    Multiply by as in: 2 = 6.283..., /2 = 1.571
x

    To convert degrees to radians, multiply the number of degrees by 180 then divide by .     This calculator will do that for you.

    Input degrees, press equal, get radian written in decimal form.

Enter negatives as "-x" rather than "- x"
degrees radians.

    To convert radians to degrees, multiply the number of radians by and divide by 180.     This calculator will do that for you.

    Input radians (as a decimal), press equal, get degree measure written in decimal form.

Enter negatives as "-x" rather than "- x"
radians degrees.


IN ENGLISH: 1. as defined above.

APPLICATION: See list 330.

Simplify:
1.
2.

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