Question

Найти cos tg ctg
sint=-0,28 pi

Answer 1

sint=-0,28  t-2ч
cost=-√1-0,0784=-√0,9216=-0,96
tgt=28/96=7/24
ctgt=24/7

Answer 2

$sin^2(t)+cos^2(t)=1\ cos(t)=sqrt{1-sin^2(t)}=sqrt{1-(-0,28)^2}=sqrt{0,9216}=-0,96$

$cot(t)=frac{cos(t)}{sin(t)}=frac{-0,96}{-0,28}=frac{24}{7}$