SOLUTION: Hi there! I am having trouble finding the exact trigonometric value for cos 135 degrees. I tried using the Unit Circle and rotating counter clockwise because it is positive. I j

Algebra ->  Trigonometry-basics -> SOLUTION: Hi there! I am having trouble finding the exact trigonometric value for cos 135 degrees. I tried using the Unit Circle and rotating counter clockwise because it is positive. I j      Log On


   

Question 880325: Hi there!
I am having trouble finding the exact trigonometric value for cos 135 degrees. I tried using the Unit Circle and rotating counter clockwise because it is positive. I just don't know where to go from there. If you could please help me that would be greatly appreciated. Thank you :)
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
I am having trouble finding the exact trigonometric value for cos 135 degrees.
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cosine is negative in Q2
--> -sqrt%282%29%2F2