1. Describe as true or false.
If pi < t < 3pi/2
which of the following is true?
a) Sin t > 0 and tan t > 0
b) Sin t < 0 and tan t < 0
c) tan t > 0 and cot t > 0
d) tan t <0 and cot t < 0
If pi < t < 3pi/2
which of the following is true?
a) Sin t > 0 and tan t > 0
b) Sin t < 0 and tan t < 0
c) tan t > 0 and cot t > 0
d) tan t <0 and cot t < 0
-
OK, so t is in quadrant 3. In quadrant 3 both sine and cosine are negative, so tan and cotan are positive. C is the correct answer.
Jen
Jen