November 2018 1 26 Report

Sprawdź, czy są to tożsamości trygonometryczne:

1. ctg\alpha+\frac{sin\alpha}{1+cos\alpha} = \frac{1}{sin\alpha}

2.\frac{1}{sin\x^{2}\alpha*cos^{2}\alpha} = \frac{sin^2\alpha+cos^2\alpha}{sin^2\alpha*cos^2\alpha}

3.1-sin\alpha = \frac{ctg\alpha - cos\alpha}{ctg\alpha}

4. \frac{sin\alpha}{1+cos\alpha} + \frac{1+cos\alpha}{sin\alpha} = \frac{2}{sin\alpha}


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