SOLUTION: Without using your calculator,find two angles, 0°≤ x < 360°
cos x=-1/sqrt(2)
I don't know any special angles for cos that equal this.
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Question 1107106: Without using your calculator,find two angles, 0°≤ x < 360°
cos x=-1/sqrt(2)
I don't know any special angles for cos that equal this.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
You don't?
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cos(45) = sin(45) = sqrt(2)/2
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Know that.
Remember it.
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