Trigonometry High School Examination Worksheet Template Page 6

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15 In the diagram below, the length of which line segment is equal to
computations.
the exact value of sin θ?
y
(0,1)
T
(–1,0)
R
x
O
S
(1,0)
(0,–1)
___
___
(1)
TO
(3)
OR
__ _
__ _
(2)
TS
(4)
OS
16 The area of triangle ABC is 42. If AB
8 and m∠B
61, the length
___
of
BC is approximately
(1) 5.1
(3) 12.0
(2) 9.2
(4) 21.7
3
2
17 When factored completely, the expression 3x
5x
48x
80 is
equivalent to
2
(1) (x
16)(3x
5)
2
(2) (x
16)(3x
5)(3x
5)
(3) (x
4)(x
4)(3x
5)
(4) (x
4)(x
4)(3x
5)(3x
5)
[6]
Algebra 2/Trigonometry – January ’13

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