+0  
 
0
514
3
avatar+1832 

are these right ! 

 

 

 Aug 5, 2014

Best Answer 

 #3
avatar+115924 
+10

Yes they are correct.  I've never seen them written on a unit circle backward before but they are right.

 Aug 5, 2014
 #1
avatar+115924 
+10

All looks good to me.

Remember. If you take any point on the unit circle,  cos will be the x value and sin will be the y value

It is easy to see why this is true because the hypotenuse is one.

 Aug 5, 2014
 #2
avatar+1832 
0

what about the coordinates in the second graph ! 

 

the place which I put in question mark ? 

 Aug 5, 2014
 #3
avatar+115924 
+10
Best Answer

Yes they are correct.  I've never seen them written on a unit circle backward before but they are right.

Melody Aug 5, 2014

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