Se cos x = 4/5 e 0 < x < π/2, determine:
a) senx
b) cos(π/2 - x)
c) tg(2π - x)
d) sec(π+x)
ME AJUDEM PORFAVOR
a) senx
b) cos(π/2 - x)
c) tg(2π - x)
d) sec(π+x)
ME AJUDEM PORFAVOR
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