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Тригонметрия есептер
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tgx=4 болғанда, ctg2x мәнін табыңыз
-15:8
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cos300°
1:2
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sin(-330)
2:3
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tg(arccos(-1:3))
-2/2
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cosx=-3/4. болғанда, cos(π-x) мәнін табыңыз
3:4
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10π/9 бұрыш қандай ширекке тиісті?
3
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