anonymous
  • anonymous
Simplify the expression; tan(-x) cos(-x)=?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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rvc
  • rvc
convert tan into sin and cos
anonymous
  • anonymous
idk how
rvc
  • rvc
\(tanx=\Large\frac{sinx}{cosx}\)

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rvc
  • rvc
what is cos(-x)=?
anonymous
  • anonymous
i still don't know what to do.
anonymous
  • anonymous
I don't understand how to do any of this.
rvc
  • rvc
do you know what is cos(-x) =?
rvc
  • rvc
rvc
  • rvc
cos(-x) = cos(x) sin(-x) = - sin(x)
anonymous
  • anonymous
k
anonymous
  • anonymous
can someone please help me? I don't understand any of this.
rvc
  • rvc
convert tanx into sin and cos
rvc
  • rvc
\[\Large \tan(-x)\cos(-x)-->\frac{ \sin(-x) }{\cos(-x) }\cos(-x)\]
rvc
  • rvc
@perl @Data_LG2 please help
anonymous
  • anonymous
@andreaevelynn can you tell us which part of rvc's explanation you did not understand so that we can explain it to you better?
rvc
  • rvc
@andreaevelynn u here?

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