Page 9 - Dahlia Oktaviani Ginting Buku

I 0 = y = 0 = 0 I

sin
0
1
x 1
1
0
cos 0 = = = 1
1 1
y 0
0
tan 0 = = = 0
x 1
0
If  = P 90 , then the line OP coincides with the X axis
) , as a result:
,1
with (0
y
90 =
0

sin

1 = 1 = 1
1
0
cos 90 = x = 0 = 0
1 1
y 1
tan 0 = = , undefined.
0
x 0
The value of trigonometric ratios for special angles is
usually presented in the form of a table as follows.
0 0 0 0 0 0
 0 30 45 60 90
0
sin  0 1 2 1 2 2 1 2 3 1
0
cos  1 1 2 3 1 2 2 1 2 0
tan  0 1 3 1 3 
0
3
Trigonometry Animation Videos

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