Question

Sendo cos x =
$\frac{ - 5}{13}$
e x = E 2• quadrante, determine:
a) Sen x
b) Tg x
c) Cotg x
d) Sec x
e) Cossec x


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Answer 1

a) Senx =

√1-(cos²x)=√1-(25/169)=√144/169=12/13

b) Tg x = senx/cosx= 12/13 / -5/13 = -12/5

c) Cotg x= 1/tgx = -5/12

d) Sec x = 1/cosx = -13/5

e) Cossec x = 1/senx = 13/12