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vloganima
@vloganima
December 2021
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Вычислите tg 30° + √2 cos 45° - sin^2 60°
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Tanda80
Все значения тригонометрических функций являются табличными, поэтому
tg30°+√2cos45°-sin^{2}60°=√3/3+√2*(√2/2)-(√3/2)^2=√3/3+1+3/4=√3/3+7/4=(4√3+21)/12
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Answers & Comments
tg30°+√2cos45°-sin^{2}60°=√3/3+√2*(√2/2)-(√3/2)^2=√3/3+1+3/4=√3/3+7/4=(4√3+21)/12