Question

calcule o valor de tg a se sen a =1/3

Answer 1

Oi

sen(a) = 1/3

sen²(a) = 1/9

sen²(a) + cos²(a) = 1

1/9 + cos²(a) = 9/9

cos²(a) = 8/9, cos(a) = 2√2/3

tg(a) = sen(a)/cos(a) = (1/3)/(2√2/3) = 1/2√2 = √2/4