Ответ:
sinxcosx<=1/4
2sinxcosx<=1/2
sin2x<1/2
2x<pi/6+2pin
x<pi/12+pin n€Z
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Ответ:
sinxcosx<=1/4
2sinxcosx<=1/2
sin2x<1/2
2x<pi/6+2pin
x<pi/12+pin n€Z