Find one positive angle and one negative angle that are soterminal with the given angle
For 9π/2 into degrees I got 13π/2 for the positive and 5π/2 for the negative.
Comparing these answers to other peoples mine seems to not be correct.
What am I doing wrong? Plz explain.
Your answers seem correct, but maybe the question wants a negative angle? (ex. -3π/2 )
Also, this is one of those questions where there are infinite possible answers, so maybe other people just wrote down something different.
To find a positive co-terminal angle...add 2pi to 9pi/ 2
So we have 2pi + 9pi/2 = 4pi/2 + 9pi/2 = 13pi/2
To find a negative co-terminal angle....subtract 6pi from 9/pi/2
So we have
9pi/2 - 6pi = 9pi/2 - 12pi/2 = -3pi/2
You are correct HL.....infinite answers are possible...!!!!