anonymous
  • anonymous
How do I prove this by using trig identities: (2sin^2x-1)/(sinxcosx)/=tanx-cotx
Mathematics
schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
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ghazi
  • ghazi
\[2 \sin^2 x-1= 2\sin^2x-(\sin^2x+\cos^2x)= \sin^2x-\cos^2x \]
anonymous
  • anonymous
how does that equal to sin^2x-cos^2x
ghazi
  • ghazi
sin^2 x + cos^2x=1

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anonymous
  • anonymous
sin^2x-cos^2x/sin^2xcosx..now what do i do
ghazi
  • ghazi
\[\frac{ \sin^2 }{ \sin x *\cos x }- \frac{ \cos^2 x }{ sinx * \cos x }= tanx - \cot x\] clear?
ghazi
  • ghazi
@sabika13 hope that helps you
anonymous
  • anonymous
how doss sin^2/sinxcosx=tanx?
anonymous
  • anonymous
does
ghazi
  • ghazi
|dw:1352223957740:dw| how about now?
ghazi
  • ghazi
still confused?
ghazi
  • ghazi
|dw:1352224079572:dw|
anonymous
  • anonymous
ohhhhh thank you so much, i wrote my denominator wrong, thats why i was confused

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