February 2019 0 8 Report
Udowodnij tożsamości

a) sin²a - 2cos²a = 3sin²a - 2

b) 1 / 1-sin a + 1 / 1 sin a = 2 / cos² a

/ - kreska ułamkowa


1
............. +
1-sin a

1
.............. =
1+sin a

2
...............
cos² a



















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