June 2019 1 37 Report
Buktikan bahwa :
a.
 \tan \alpha + \cot \alpha = \sec \alpha \csc \alpha
b.
 \frac{ \sin\alpha }{ \cos\alpha } + \frac{ \cos\alpha }{ \sin\alpha } = 1 + \tan ^{2} \alpha .1 + \cot^{2} \alpha

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