Si: a + θ = 90º; tgθ = 4/3. Calcular ctga
a)1/4
b)4/3
c)3/4
d)1/3
a)1/4
b)4/3
c)3/4
d)1/3
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Respuesta:
c
Explicación:
[tex]tg de teta =\frac{4}{3} = \frac{CO}{CA} \\tg de teta = tg 53 \\[/tex]
a + 53º = 90º
a = 37º
entonces: ctga= ctg37º = [tex]\frac{CA}{CO}[/tex] [tex]= \frac{3}{4}[/tex]