Question

Решите, пожалуйста. 2 / tg t + ctg t.

Answer 1

cos(t)/sin(t)*1/(sin(t)/cos(t)+cos(t)/sin(t))=cos(2t)

(cos(t))^2=cos(2t)
(sin(t))^2=0
sin(t)=0
t = n*pi

Answer 2

2/tg(t)=2*ctg(t) 

2*ctg(t) +ctg(t)  = 3*ctg(t)