January 2019 0 25 Report
Udowodnij tożsamość trygonometryczną:
 a) \frac{sinx}{1+cosx} = \frac{1-cosx}{sinx} \\ b) \frac{tgx+cosx}{cosx*sinx} = \frac{1}{sinx} + \frac{1}{cos^2x}
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