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Simplifying a trigonometric binomial

  • Thread starter Ry122
  • Start date
565
2
Is this correct?
(bcos30-85.7)(bcos30-85.7)=b²cos²30-85.7cos30-85.7bcos30+85.7²
 

Answers and Replies

458
0
You're missing a b term for 85.7cos30 and then you have to simplify.
 

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