Proszę aby ktos jak wie Sprawdził tozsamość!!!
(1 + sina)(1/cosa - tga) = cosa
L = 1/cosa - tga + sina/cosa - sina * tga = 1/cosa - tga + tga - sina * sina/cosa =
1/cosa - sin²a/cosa = (1 - sin²a) / cosa = cos²a / cosa = cosa = P
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(1 + sina)(1/cosa - tga) = cosa
L = 1/cosa - tga + sina/cosa - sina * tga = 1/cosa - tga + tga - sina * sina/cosa =
1/cosa - sin²a/cosa = (1 - sin²a) / cosa = cos²a / cosa = cosa = P