juliettesantiago01 juliettesantiago01

03-01-2018
Mathematics

contestada

which is a value of x if sin 60°=cos(x+10)°

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habeebmusa24 habeebmusa24

08-01-2018

Solution
cos (90-60)=cos (x+10)
⇒30=x+10
x=30-10
x=20.

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