Homework Help: math

Posted by darshi on Sunday, May 20, 2012 at 12:28am.

Why do we write radian measures with a π rather than just give the decimal equivalent?

math - drwls, Sunday, May 20, 2012 at 1:10am
So that the equations can be exact.
For example,
Tan (pi/4) = 1 is exact

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