Hi I'm having some trouble with these two problems. I would appreciate any help.
The first question asks name each quadrant described.
a) sin theta<0 and cos theta>0
I think this is Quad IV
b) sin theta>0 and sin (90 degrees + theta)>0.
I have no idea what this means.
The seocnd problem says solve each equation for all theta in radians without a calculator or table.
a) cos theta= 1
b) sin theta= -1
c) cos theta = 0
d) cos theta =-3
i have no idea how to do these either.
Thanks for your help
The first question asks name each quadrant described.
a) sin theta<0 and cos theta>0
I think this is Quad IV
b) sin theta>0 and sin (90 degrees + theta)>0.
I have no idea what this means.
The seocnd problem says solve each equation for all theta in radians without a calculator or table.
a) cos theta= 1
b) sin theta= -1
c) cos theta = 0
d) cos theta =-3
i have no idea how to do these either.
Thanks for your help