Liyuki
Liyuki
22-03-2017
Mathematics
contestada
Helpp?
Simplify (secx/cosx) - (tanx/cotx)
Respuesta :
magdalenelkh
magdalenelkh
22-03-2017
secx = 1/cosx
cot x = 1/tanx
1 + tan^2(x) = sec^2(x)
minus tan^2(x) on both sides,
1 = sec^2(x) - tan^2(x)
sec(x)/cos(x) - tan(x)/cot(x)
=1/cos^2(x) - tan^2(x)
= sec^2(x) - tan^2(x)
= 1
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