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I'm just stuck on this last question.

 

 Sep 3, 2020
 #1
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Between pi and 2pi      sin is negative      ( if cos is negative too, theta is in Q III)

 

Remember    sin2 + cos2 = 1

                       sin2 = 1 - cos2

                       sin2 = 1- (-5/7)2 = 24/49

                        sin = -  sqrt24 / 7    (REMEMBER: sin has to be negative between pi and 2pi)

 

Then     csc  =   1/sin   =   - 7/sqrt24

             sec = 1/cos    =   - 7/5

             tan = sin/ cos = ............

              cot = cos/sin =..............

 Sep 3, 2020

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