12.092019

tg 3п/4 - sin 7п/6 =

Гилберт Алгебра 2 1

tg 3п/4 - sin 7п/6 =

Posted by Гилберт | Posted at Sep 12, 2019 | Categories: Алгебра

Answers

svetlanasvet
svetlanasvet

=tg ( П-П/4) - sin ( П+П/6)=- tgП/4-(-sinП/6)=-1+1/2=-0,5

Sep 12, 2019 04:02
isi
isi

[latex]tg frac{3*pi}{4}-sin frac{7*pi}{6} =-1-(- frac{1}{2})=-1+frac{1}{2}=-0,5 [/latex] 1) [latex]tg frac{3*pi}{4}=tg(pi-frac{pi}{4})=-tg (frac{pi}{4})=-1 [/latex] 2) [latex]sin frac{7*pi}{6}=sin(pi+ frac{pi}{6})=-sin (frac{pi}{6})=- frac{1}{2} [/latex]

Sep 12, 2019 04:08

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