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Синус и косинус двойного и половинного угла. Тригонометрия-9
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03/23/20
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School education / Math
Математика - формулы.
Тригонометрия (урок 9). Тригонометрические функции двойного и половинного аргумента. Синус, косинус, тангенс и котангенс двойного и половинного угла.
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