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1. Name 3 quadrantal angles

2. What is the proportion used to find arc length?

3. In the second quadrant, is cosine positive or negative?

 

Thank you!! <3

 Nov 19, 2018

Best Answer 

 #1
avatar+18280 
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1>   90   180   270 degrees

2>    (arc degrees)/360  x  pi  x d

3>  Cos is negative in Q2    Sin is positive in Q2

 Nov 19, 2018
 #1
avatar+18280 
+2
Best Answer

1>   90   180   270 degrees

2>    (arc degrees)/360  x  pi  x d

3>  Cos is negative in Q2    Sin is positive in Q2

ElectricPavlov Nov 19, 2018

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