s4umbbiteffenguye
s4umbbiteffenguye
02-09-2016
Mathematics
contestada
Is sinx cosx ever equal to 1?
Respuesta :
SyntaxError
SyntaxError
02-09-2016
From Pythagorean Identities
sin^2
x
+
cos^2
x
=1
and from that identities we can have
sinx
+
cosx
=1
, taking
sinx
=1−
cosx
and substitute in the equation
sinx
+
cosx
=1
(1−
cosx
)
+
cosx
=1
Remove the parenthesis
1−
cosx
+
cosx
=1
cancel
cosx
1=1
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