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Graph of Trig. Functions:
Consider x as a real number or an angle in radians.
If f is any trig. function then f( x + 2p ) = f(x) ; Therefore the graph of the function has an interval of 2p.
Graph of f(x) = sin x :
Graph of f(x) = cos x :
Graph of f(x) = csc x :
Graph of f(x) = sec x :
The functions above are periodic of period 2p.
Graph of f(x) = tan x :
Graph of f(x) = cot x :
The functions above are periodic of period p.
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