bjbarrett23
bjbarrett23
04-05-2017
Mathematics
contestada
Help please trigonometric identities
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akaleti47
akaleti47
04-05-2017
cot=cos/sin
so, it becomes sin^2+cos^2=1
that proves it
Answer Link
bcalle
bcalle
04-05-2017
Sin^2x ( 1 + cot^2x) = 1
Change cot^2x to cos/sin
Sin^2x(1+cos^2x/sin^2x))=1
Distribute the sin^2x
Sin^2x + cos^2x = 1
1 = 1
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