anonymous
  • anonymous
can anyone help me with this 2sintcost - cost = 0 im probably overthinking this
Mathematics
schrodinger
  • schrodinger
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amistre64
  • amistre64
2 sin(t) cos(t) = sin(2t) when does sin(2t) = cos(t)?
dumbcow
  • dumbcow
factor out the cos
amistre64
  • amistre64
or...do it the smart way and factor out the ...... lol

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dumbcow
  • dumbcow
your way works too
anonymous
  • anonymous
sint(cost+sint)?
amistre64
  • amistre64
cos(t)(2sin(t) - 1) = 0 when does cos(t) = 0? 90 and 270 right?
amistre64
  • amistre64
2sin(t) - 1 = 0 2sin(t) = 1 sin(t) = 1/2...thats a 30 right? and 150?
anonymous
  • anonymous
k, i knew i had to factor out, just didnt know where to start

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