(9sin168)/(cos84*cos6). Created by JessR. algebra-ru

(cos84*cos6)...

JessR @JessR

July 2022 1 8 Report

(9sin168)/(cos84*cos6)

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$\frac{9sin168}{cos84*cos6}= \frac{9sin(2*84)}{cos84*cos6}= \frac{9*2sin84*cos84}{cos84*cos6}= \frac{18sin84}{cos6}= \frac{18sin84}{cos(90-84)}=\\\\= \frac{18sin84}{sin84} =18$

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ploskost g peresekaet ploskosti a i b po parallelnym pryamym mogut li ploskost

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JessR October 2021 | 0 Ответы

kazhdaya iz ploskostej a i b parallelna ploskosti g mogut li ploskosti a i b per

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ploskost g peresekaet ploskosti a i b po parallelnym pryamym mogut li ploskost

kazhdaya iz ploskostej a i b parallelna ploskosti g mogut li ploskosti a i b per

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