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Graph of Trigonometric Functions



Table A
x 0
y 0 1 0 -1 0 1 0 1 0

 



Table B
x 0
y 1 0 -1 0 1 0 -1 0 1

 



Table C
x 0
y 0 0 -∞ 0 -∞

Remarks:-
  1. The graphs of y = tan x is discontinuous at
    i.e. The graph meets the lines
  2. The line which touches a curve at infinity is called an asymptote. So the dotted lines are asymptotes.
  3. Sine and Cosine curves are continuous throughout
  4. Similarly if we draw the graphs of cot x, cosec x and sec x, we get the  following:-





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