Вычислите sin 165 градусов. Created by Merry888. algebra-ru

Вычислите sin 165 градусов...

Merry888 @Merry888

October 2021 1 30 Report

Вычислите sin 165 градусов

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$sin165=sin(120+45)=sin120*cos45+cos120*sin45=\\\\= \frac{ \sqrt{3} }{2}* \frac{ \sqrt{2} }{2}+ (-\frac{1}{2})* \frac{ \sqrt{2} }{2}= \frac{ \sqrt{2}( \sqrt{3}-1) }{4}$

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Merry888 July 2022 | 0 Ответы

osnovaniem pryamoj treugolnoj prizmy yavlyaetsya pryamougolnyj treugolnik s katetac8c8f710a87391ed14159c1e60726850 30990

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Merry888 July 2022 | 0 Ответы

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opredelit stepen okisleniya hclmno2 mncl2o2h2o

osnovaniem pryamoj treugolnoj prizmy yavlyaetsya pryamougolnyj treugolnik s katetac8c8f710a87391ed14159c1e60726850 30990

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2 10mozhno po podrobnee vse dejstviya

3h 1 2h 32h 34 0215u4 065u102

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reshite pokazatelnoe uravnenie 23x0453x

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4) = cos a - sin a...

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