1) cos²105°-sin²105°2) cos²7°+sin²7°3) [tex] \frac{tg100 - tg70}{1+tg100*tg70} [/tex]. Created by kseshasha. matematika-ru

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August 2022 1 15 Report

1) cos²105°-sin²105°
2) cos²7°+sin²7°
3) [tex] \frac{tg100 - tg70}{1+tg100*tg70} [/tex]

Answers & Comments

julyap $1) cos ^{2} 105-sin^{2} 105=cos(2*105)=cos210=cos(180+30)= \\ =-sin30=- \frac{1}{2} =-0.5 \\ 2) cos^{2} 7+sin ^{2} 7=1 \\ 3) \frac{tg100-tg70}{1+tg100*tg70} =tg(100-70)=tg30= \frac{ \sqrt{3} }{3}$

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srochnoooo 22 variantpozhalujsta

2 a esli sina 05

periodicheskaya funkciya y fx opredelena dlya vseh dejstvitelnyh chisel eyo peri

pomogite srochnoooozadanie vo vlozheniiiii

pomogite pozhalujstaperiodicheskaya funkciya y fx opredelena dlya vseh dejstvite

pozhalujstavychislite log32

srochnoooooovychislitelog80 log5

pomogite pozhalujstanuzhno otvetit na voprosy po tekstugreat britainthe unite77205df108f644f3683793927a788923 78387

pomogite nuzhno ishodya iz etogo teksta vo vlozhenii sdelat peredelat ego v

privedite primery gos v iz istorii i sovremennosti oharakterizovav ih po forme

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