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Anonymous Anonymous
  • 25-03-2016
  • Mathematics
Answered

Find the cos(19pi/6)

Verified Answer :

Anonymous Anonymous
  • 25-03-2016

π=180º

Cos(19π/6)=cos(19*180º/6)=cos (570º)=cos(210º+360º)=cos(210º)=
=-cos 30º=-√3 / 2≈-0.866...

Answer: cos(19π/6)=-cos 30º=-√3/2

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