SOLUTION: Given that cos t = 8/9 and that P(t) is a point in the fourth quadrant, find sin t. sin t =

Question 1031224: Given that cos t = 8/9 and that P(t) is a point in the fourth quadrant, find sin t.
sin t =
Answer by ikleyn(52834) (Show Source): You can put this solution on YOUR website!
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Given that cos t = 8/9 and that P(t) is a point in the fourth quadrant, find sin t.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Since cos(t) = , you have 

 =  =  =  = .

Hence, sin(t) = +/- .

Now, what sign,  "+"  or  "-",  to choose? 

Since P(T) is in QIV, what sign for sin(t) will you choose?

Comment from student: Thanks so much for the help! By the way, I'm thinking that the sign would be negative?

My response:  you are right!  Hope next time you will be able to solve similar problems on your own.  Good luck!!!

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