January 2019 1 11 Report
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W trojkacie prostokatnym ABC o kącie prostym przy wierzcholku C o kacie ostrym alfa przy wierzcholku A dane sa dlugosci bokow: | AB| = 4 i |BC| = 3.

A. = 3/4, B. cos alfa = 3/5. C. cos alfa= 4/5. D. cos alfa = pierw. z7/4

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