Analysis and Approaches for IBDP Maths Ebook 2 | Page 72

Your Practice Set – Analysis and Approaches for IBDP Mathematics
Exercise 22
1. � and � are acute angles such that
cos( �� 2 �)
.
2
sin� � and
5
3
cos � � . Find the value of
5
[6]
2. � and � are acute angles such that
sin( �� 2 �)
.
3
tan� � and
4
cos � �
3
. Find the value of
5
[7]
� � � �
3. The solution of the equation cos �x�
��cos cos x
� 6�
3
value of a and the value of b .
satisfies tan x �a 3 � b . Find the
[5]
� � �
4. x satisfies the equation tan �x
� ��2
. Find the value of
� 4 �
2
sec x .
[5]
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