MATH PLEASE
posted by Kamen .
can a reference angle be negative?
Tye "reference angle" in google and check out the mathwords site :)
no
I copied and pasted the mathwords page for you, unfortunatly the diagram that was with it cant, express itself in text so it didn't appear.
For any given angle, its reference angle is an acute version of that angle. In standard position, the reference angle is the smallest angle between the terminal side and the xaxis. The values of the trig functions of angle θ are the same as the trig values of the reference angle for θ, give or take a minus sign.
no?
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(a) If è is in standard position, then the reference angle è is the acute angle formed by the terminal side of è and the Select xaxis yaxis . So the reference angle for è = 120° is è = ?