Asked by Anonymous
                Let  be an angle in standard position and the point
(a, b) be the point of intersection of the terminal
side of with the unit circle. State the unit circle
definitions of the six trigonometric functions.
cos = sec =
sin = csc =
tan = cot =
            
        (a, b) be the point of intersection of the terminal
side of with the unit circle. State the unit circle
definitions of the six trigonometric functions.
cos = sec =
sin = csc =
tan = cot =
Answers
                    Answered by
            Reiny
            
    If Ø is your angle, and since
r=√(a^2 + b^2)
sinØ = b/r
cscØ = r/b
cosØ = a/r
secØ = r/a
tanØ = b/a
cotØ = a/b
These definitions should be in your textbook and are probably defined in terms of x, y and r.
You should memorize them
    
r=√(a^2 + b^2)
sinØ = b/r
cscØ = r/b
cosØ = a/r
secØ = r/a
tanØ = b/a
cotØ = a/b
These definitions should be in your textbook and are probably defined in terms of x, y and r.
You should memorize them
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