Question

Will medal and fan. pls help
http://prnt.sc/a9uj8z

Answer 1

@mathmale

Answer 2

@ganeshie8

Answer 3

@phi

Answer 4

is this 4 separate questions ?

Answer 5

yes

Answer 6

help in 2 will be enough

Answer 7

every 2pi is a full circle. you can add (or subtract) 2pi and the position of the "terminal side" does not change.
so for a) I would add 2pi twice: -5pi + 4pi = -pi
and I know that is -180 degrees which means we are on the negative x-axis

Answer 8

for b) we know pi is 180 degrees and ⅔ pi must be less than 180
⅔ pi is bigger than pi/2 (bigger than 90 deg)
so which quadrant is 2pi/3 ?

Answer 9

2nd?

Answer 10

i think so

Answer 11

the quadrants are