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nrdydb8r
nrdydb8r nrdydb8r
  • 30-01-2017
  • Mathematics
Answered

Choose the point on the terminal side of -210°. Please only answer this question if you are willing to show work so I can learn how you got your answer!

Verified Answer :

surjithayer surjithayer
  • 31-01-2017

x=rcos∅=r cos (-210)=r cos 210=rcos (180+30)=-r cos 30
\(x=-r* \frac{sqrt 3}{2} = \frac{- sqrt 3r}{2} ,\)
\(y=r sin (-210)=-rsin 210=-rsin (180+30)=-r(-sin 30)\)
1\(or y=r sin 30=r* \frac{ 1}{2} = \frac{r}{2}\)


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