Question

State the (positive or negative) of each the sine, cosine, and tangent functions in each quadrant:

QUADRANT 1:
sin-
cos-
tan-

QUADRANT 2:
sin-
cos-
tan-

QUADRANT 3:
sin-
cos-
tan-

QUADRANT 4:
sin-
cos-
tan-

Answer 1

http://math2.org/math/trig/tables.htm

Answer 2

q1 0-90
q2 90-180
q3 180-270
q4 270 - 360

Answer 3

Thanks! That helps a lot!!

Answer 4

In quadrant one, all are positive, in two, sine is positive and the others are negative, in three, tangent is positive and others are negative, and in four, only cosine is positive. You can remember this with the acronym ASTC. If you want, you can even use a mnenomic device. One of my favorites is "Angels [are] Silly Tuesdays, Children."

Answer 5

Thank you! Ha, I know it by All Students Take Calculus