Question

help? medal @phi @NoelGreco @freckles

Answer 1

-1

Answer 2

how do you know @;pwat

Answer 3

sec(-180^o)=sec(180^o)=-1


So if we go round the unit circle 180 degrees from the far right, amount of cos is -1, so sec(180)=1/-1 = -1


sec(180 degrees) = 1/cos(180 degrees) = 1/(-1) = -1



diferent ways to find it ^^^ (hope I helped)

Answer 4

thank you @;pwat

Answer 5

your welcome