Apps. and Interpretation for IBDP Maths Ebook 1 | Page 140

Your Practice Set – Applications and Interpretation for IBDP Mathematics
Chapter
12
Trigonometry
SUMMARY POINTs
� Consider a right-angled triangle ABC :
2 2 2
AB �BC � AC : Pythagoras’ Theorem
� AB
�
sin�
�
AC ��
BC
�cos�
� : Trigonometric ratios
�� AC
AB
�tan�
�
� BC
� Properties of a general trigonometric function y � Asin B( x �C)
� D :
A �
y
max
� y
2
min
: Amplitude
360
ymax � ymin
B � and D �
Period 2
C can be found by substitution of a point on the graph
Solutions of Chapter 12
130
SE Production Limited