Ответ:
а)sin^2a+1/1/cos^a=1
sin^2a+cos^2a=1
1=1
(1-cos^2a )=sina•cosa/cosa/sina
sin^2a=sina•sina
sin^2a=sin^2a
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Answers & Comments
Ответ:
а)sin^2a+1/1/cos^a=1
sin^2a+cos^2a=1
1=1
(1-cos^2a )=sina•cosa/cosa/sina
sin^2a=sina•sina
sin^2a=sin^2a