Trigonometry High School Examination Worksheet Template Page 5

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1 __
11 If sin A
, what is the value of cos 2A?
computations.
3
2 __
7 __
(1)
(3)
3
9
2 __
7 __
(2)
(4)
3
9
12 In the interval 0°
x
360°, tan x is undefined when x equals
(1) 0° and 90°
(3) 180° and 270°
(2) 90° and 180°
(4) 90° and 270°
2
13 If
f( )
x
9
x
,
what are its domain and range?
(1) domain: {x | 3
x
3}; range: {y | 0
y
3}
(2) domain: {x | x
3}; range: {y | 0
y
3}
(3) domain: {x | x
3 or x
3}; range: {y | y
0}
(4) domain: {x | x
3}; range: {y | y
0}
2
3
2
14 When x
3x
4 is subtracted from x
3x
2x, the difference is
3
2
3
2
(1) x
2x
5x
4
(3)
x
4x
x
4
3
2
3
2
(2) x
2x
x
4
(4)
x
2x
5x
4
[5]
[OVER]
Algebra 2/Trigonometry – January ’13

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