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imangazalievma
@imangazalievma
October 2021
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7 корней из 2 * sin 15 pi/8* cos 15pi/8
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uekmyfhfp
Verified answer
= 7/2 * sgrt2 *(2sin15pi/8cos15pi/8)= 7/2 *sgrt2*sin15/4=7/2*sgrt2*sin(-pi/4)=
=7/2*sgrt2*(-sgrt2/2)= -7/2= - 3,5
19 votes
Thanks 61
imangazalievma
Не-подскажите, что такое sgrt? и нельзя как нибудь попонятнее оформить, пожалуйста
Lyubishka
sgrt - это корень квадратный
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Verified answer
= 7/2 * sgrt2 *(2sin15pi/8cos15pi/8)= 7/2 *sgrt2*sin15/4=7/2*sgrt2*sin(-pi/4)==7/2*sgrt2*(-sgrt2/2)= -7/2= - 3,5