Posted by Tara on Monday, January 4, 2010 at 7:26pm.
I'm trying to find out which quadrant some trigonometric functions lie in. The problem is one of them is equal to zero, and zero is neither positive or negative. How do I determine which quadrant it belongs in then???

Trig  Reiny, Monday, January 4, 2010 at 8:01pm
I suggest that you "memorize" the shape and graph of the sine, cosine and tangent functions.
That way you can tell where the angle ß in such equations as sinß = 0 is.
You are correct to notice that those angles do not lie in a particular quadrants, so they are considered special cases.
e.g. sin 180º = 0
while sin 179º is positive
and sin 181º is negative.
We would have not problem deciding where 179 and 181 lie, would we?
Answer This Question
Related Questions
 Math  When studying integers, zero is _________. Select one: a. a positive b. ...
 Trigonometric Functions  Determine the Value of all six trigonometric functions...
 math  In which quadrant does the terminal side of the angle with measure 245 ...
 Algebra 2  Can someone help me figure these out? I think if someone can explain...
 Algebra 2  Can someone help me figure these out? I think if someone can explain...
 Math Trig Find Quadrant I II III IV  In which quadrant is the terminal side of ...
 Linear Functions  If m < 0 and b > 0, the graph of y = mx + b does not ...
 math  For the system of linear equations below, use graphing to determine in ...
 Pre Calculus  Determine the quadrant in which a 130° angle lies. a. 4th ...
 Math (Right Triangle Trig)  Suppose tan(theta)=5/7 and theta belongs to ...
More Related Questions