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tg(x) = -12/5

tg(x) = sen(x)/cos(x) = -12/5

5sen(x) = -12cos(x)

25sen²(x) = 144cos²(x)

25sen²(x) - 144cos²(x) = 0

sen²x) + cos²(x) = 1

144sen²x) + 144cos²(x) = 144

169sen²(x) = 144

sen²(x) = 144/169

sen(x) = 12/13

cos²(x) = 25/169

cos(x) = -5/13

a) sen(x) = 12/13

b) sec(x) = -13/5

c) cossec(x) = 13/12

d) cotg(x) = -12/5

e) cos(x) = -5/13

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