SOLUTION: Find sin 210 : my question is that on my notes the teacher gave us it says 60 is the refernce angle but when I did It I got 30 due to having 210-180=30 I want to make sure if my
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-> SOLUTION: Find sin 210 : my question is that on my notes the teacher gave us it says 60 is the refernce angle but when I did It I got 30 due to having 210-180=30 I want to make sure if my
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Question 1030888: Find sin 210 : my question is that on my notes the teacher gave us it says 60 is the refernce angle but when I did It I got 30 due to having 210-180=30 I want to make sure if my teachers notes are correct because I'm confusing myself Answer by rothauserc(4718) (Show Source):
You can put this solution on YOUR website! You are correct,
:
sin 210 = sin(210-180) = -sin 30, since sin is negative in the third quadrant
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