Page 20 - modul trigonometri bilingual
P. 20
Comparison of Trigonometry of Correlated Angles
1. Comparison of Trigonometry in Various Quadrants
The trigonometric ratio value of an angle can be determined
by creating a right triangle with one side on the X-axis first.
Y Y
P P
y y
r
r
°
°
x X -x X
O Q Q O
Y Y
° °
Q Q x
-x O X O X
r r
- -
P P
a a
8
