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airco100
May 18, 2011, 07:43 AM
Tan15 degree
ebaines
May 18, 2011, 07:51 AM
You can determine the value of tan(15 degrees) by applying the difference formulas for sine and cosine:


\tan (15) = \frac {\sin(15)} {\cos(15)} = \frac {\sin(45-30)} {\cos (45-30)}


Can you take it from here?