GeorgineFarias GeorgineFarias
  • 06-08-2014
  • Mathematics
Answered

Can anyone help???

simplify: cos(126°)cos(36°) + sin(126°)sin(36°)

Answer :

Everest2017
Everest2017 Everest2017
  • 06-08-2014
cos A cos B + sin  A sin B  =  cos (A - B)

given expression is = cos (126 - 36 ) = cos 90  = 0

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Аноним Аноним
  • 06-08-2014
A-b is the answer if u know how to simplify numbers similar to that
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