November 2018 2 123 Report

1.Oblicz.

tg10°*tg20°*tg30°*tg40°*tg50°*tg60°*tg70°*tg80°

2.Skonstruuj trójkąt prostokątny, w którym kąt ostry α spełnia warunek:

sin α*tg(90°-α)=½


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