Trigonometry High School Examination Worksheet Template Page 7

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18 The value of sin (180
x) is equivalent to
computations.
(1)
sin x
(3) sin x
(2)
sin (90
x)
(4) sin (90
x)
3
3
4 2
4 2
6
a b
162
a b ,
19 The sum of
and
expressed in simplest radical
form, is
3
6
2
8 4
(1)
168
a b
(3)
4
a
6
ab
3
2 3
2
2
2
a b
21
a b
10
a b
8
(2)
(4)
20 Which equation is represented by the graph below?
___
(1) y
2 cos 3x
(3) y
2 cos
x
3
___
(2) y
2 sin 3x
(4) y
2 sin
x
3
[7]
[OVER]
Algebra 2/Trigonometry – January ’13

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