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shatosha59rus
@shatosha59rus
October 2021
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Решите пожалуйста: 3cos(п-L)+sin(п/2+L) и всё делённое на cos(L+3п)
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mewnet
(3cos(π-x)+sin(π/2+x))/cos(3π+x)=(-3cosx+cosx)/(-cosx)=2cosx/cosx=2
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