5.
sinx=-1/2
, k∈Z
x=(7π/6)∈[π/2;3π/2]
cм рис.
6.
cos(π)=-1;
sin(-5π/2)=-1
tg(4π/3) = tg(π+(π/3))= - tg(π/3)= - √3
tg²(4π/3) =3
О т в е т. -1-(-1)+3=3
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
5.
sinx=-1/2
x=(7π/6)∈[π/2;3π/2]
cм рис.
6.
cos(π)=-1;
sin(-5π/2)=-1
tg(4π/3) = tg(π+(π/3))= - tg(π/3)= - √3
tg²(4π/3) =3
О т в е т. -1-(-1)+3=3