a=5, b=12, c=13
\sin\alpha=\frac{a}{c}=\frac{5}{13}
cos\alpha=\frac{b}{c}=\frac{12}{13}
tg\alpha=\frac{a}{b}=\frac{5}{12}
ctg\alpha=\frac{b}{a}=\frac{12}{15}
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\sin\beta=\frac{b}{c}=\frac{12}{13}
cos\beta=\frac{a}{c}=\frac{5}{13}
tg\beta=\frac{b}{a}=\frac{12}{13}
ctg\beta=\frac{a}{b}=\frac{5}{12}
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