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Ватсон17
@Ватсон17
November 2021
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sin 130 + sin 110/cos 130 + cos 110
ПРОШУ ОЧЕНЬ НУЖНО
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avilov41
Verified answer
Решение;
(sin130°+sin110°)/cos130°+cos110°=
=(2sin120°c0s10°)/(2cos120°cos10°)=
=tg120°=tg(90°+30°)=-cotg30°=-√3.
Ответ -√3.
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Verified answer
Решение;(sin130°+sin110°)/cos130°+cos110°=
=(2sin120°c0s10°)/(2cos120°cos10°)=
=tg120°=tg(90°+30°)=-cotg30°=-√3.
Ответ -√3.