aaronq
  • aaronq
what does tan2x equal when, x=-60 degrees?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
2*-60 is 120 so cos(-120) = \[\frac{ 1 }{ 2 }\] and sin(-120) = \[\frac{ -\sqrt{3} }{ 2 }\] tan is opp/adj which will then give you an exact answer of \[\sqrt{3}\]
anonymous
  • anonymous
tan = sin/cos
aaronq
  • aaronq
thanks so much, i wasn't sure if i could just multiply 2 by 60, or if i had to use the identity 2tanx/1-tan^2x

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anonymous
  • anonymous
as long as the 2 and x are together you are fine tan(2x)
aaronq
  • aaronq
what if it's tan2x? it didn't necessarily specify tan(2x)
anonymous
  • anonymous
That is fine also if the 2 was outside for example 2tan(x) then it would be different
aaronq
  • aaronq
ok sweet, thanks (Y)

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