September 2018 1 20 Report

Wykaż, że dla kata ostrego tożsamością jest równość:

a) (tg - 1)(ctg + 1)=tg - ctg

b) tg * ctg + 1= 2(sin(kwadrat) + cos(kwadrat))

c) (1+ cos)(1-cos) = sin(kwadrat)

d) 1- 2cos(kwadrat) = 2sin(kwadrat) - 1


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