Question

Дано: cos t=8/17, 0 Найти: sin t, tg t, ctg t

Answer 1

1=sin^2t+cos^2t
sint=корень из (1-(8/17)^2
sint=15/17
tg t=sin t/cos t=8/17/15/17=8/15
ctg t=1/tg t=15/8