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Maria Kaloyanova
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Синус и косинус на 180-ъгъл
Maria Kaloyanova
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Правилна 3-ъгълна пирамида
Maria Kaloyanova
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Синус и косинус на обобщен ъгъл
Maria Kaloyanova
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Основно тригонометрично рав-во
Maria Kaloyanova
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Единична окръжност
Maria Kaloyanova
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Единична окръжност - котангенс
Maria Kaloyanova
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Единична окръжност - тангенс
Maria Kaloyanova
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