Question

If cos(t)=−3/5 where pi 12 years ago

Answer 1

Well if pi<t<3pi/2
then pi/2<t/2<3pi/4
And that area of the rectangular coordinate system, cos is negative and sin is positive since x is negative and y is positive there.

Answer 2

I just took the inequality given and divided by 2.
t/2 is between pi/2 and 3pi/4

Answer 3

ohh. got it thanks buddy

Answer 4

np