math
posted by renita .
is the cos x<0 in quad 2 and 3?

yes
scroll down to "Panel 8" on this page
http://www.physics.uoguelph.ca/tutorials/trig/trigonom2.html
posted by renita .
is the cos x<0 in quad 2 and 3?
yes
scroll down to "Panel 8" on this page
http://www.physics.uoguelph.ca/tutorials/trig/trigonom2.html