## anonymous one year ago Find the measures of two angles, one positive and one negative, that are coterminal with pi divided by two. three pi divided by two; negative pi divided by two pi divided by two + 360°; pi divided by two - 360° five pi divided by two; negative pi divided by two five pi divided by two; negative three pi divided by two @ganeshie8 @mathmate @jagr2713

1. ganeshie8

Adding/subtracting $$2\pi$$ from the angle won't change the position of the point.

2. anonymous

what do u mean?

3. anonymous

@ganeshie8

4. anonymous

@mathmate help plz

5. mathmate

Understanding the definition of "coterminal angles" would help a lot in solving this question. See following link for further help. Do not forget @ganeshie8 's hint. http://www.icoachmath.com/math_dictionary/coterminal_angles.html