anonymous
  • anonymous
cos105 cos75 - sin105 sin75
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
this is simple. just calculate it as is, on the graphing calculator, and hit equal. thats the answer
anonymous
  • anonymous
i have to do it out by hand
anonymous
  • anonymous
you would need a table to do it by hand

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anonymous
  • anonymous
oh! right! the z table right? well, you cant do it by hand, just wanted to let you know that. but you dont know how to use the z chart?
anonymous
  • anonymous
what about sin 75 cos 75

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