Analysis and Approaches for IBDP Maths Ebook 2 | Page 65

Chapter
7
Trigonometry
7
SUMMARY POINTs
�
�
�
Reciprocal trigonometric ratios:
1
1. cosec�
�
sin�
1
2. sec�
�
cos�
1
3. cot�
�
tan�
Inverse trigonometric functions:
1.
2.
3.
1 1
f ( x) sin x f �
�
� � ( x) � sin x � arcsin x
1 1
g( x) cos x g �
�
� � ( x) �cos x � arccos x
1 1
h( x) tan x h �
�
� � ( x) �tan x � arctan x
More trigonometric identities:
1.
2 2
sec � �1�
tan �
2.
2 2
cosec � �1�
cot �
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