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Solution 4.2:4f

From Förberedande kurs i matematik 1

Revision as of 10:52, 9 October 2008 by Tek (Talk | contribs)
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If we add 2 to 53, we get a new angle in the first quadrant which corresponds to the same point on the unit circle as the old angle 53 and consequently has the same tangent value,

tan35=tan35+2=tan3=sin3cos3=2123=3.