Question

Sendo sen x = 3/5, calcule tg x.

Me ajudem por favoor

Answer 1

sen²x+cos²x=1
(3/5)²+cos²x=1
9/25+cos²x=1
cos²x=1-9/25
cos²x=16/25
cosx=4/5
senx/cosx=tgx
(3/5)/(4/5)=tgx
tgx=3/4