chels
  • chels
simplify this expression sec(x)cot(x)sin(2x)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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myininaya
  • myininaya
are we trying to show this equals something else?
chels
  • chels
nope, just trying to simplify it using identities
anonymous
  • anonymous
Instead of sec(x) you can write 1/cos(x). Instead of cot(x), write cos(x)/sin(x). Instead of sin(2x), write 2*sin(x)*cos(x). Cancel like terms and out pops a clean new expression, that you will like. :)

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myininaya
  • myininaya
2cosx!
myininaya
  • myininaya
thats not factorial by the way its an exclamation point
chels
  • chels
oh thanks! i've got more too haha
chels
  • chels
sin(2x)cos(5x) + cos(2x)sin(5x)
myininaya
  • myininaya
oh mine thats shat sin(2x+5x)
myininaya
  • myininaya
sin(7x)
myininaya
  • myininaya
remember sin(x+y)=sinxcosy+sinycosx correct?
chels
  • chels
oh, yes! i forgot that identity since it didn't look that way to begin with.
chels
  • chels
where do i go once it's expanded?

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