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I hope this helps you
Приложения:
fourfive17:
Ok thank you
and can you help me at this question?
yes i wanna help you out
(tg a+ctg a) sin 2a
(1-tg^2 a) cos^2 a
and this one please
i think you have to check this questions answer
and i add your others answers pal
thank you for your answers
no problem :)
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