Signs of Trigonometric Functions
Quadran
|
Sin α
|
Cos α
|
Tan α
|
Cot α
|
Sec α
|
Cosec α
|
I
|
+
|
+
|
+
|
+
|
+
|
+
|
II
|
+
|
+
|
||||
III
|
+
|
+
|
||||
IV
|
+
|
+
|
Trigonometric
Functions of Common Angles
Most
Important Formulas
Sumber
Labels:
Mathematician
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