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Precalculus Honors Final Exam Review Answers
Page Problem # Answer 1 274 146 98.6% 2 273 126 45 272.991e ≈ 3 273 108 ( )1 ln40 2 .5633 − ≈
4 272 93
( )22 1ln
1x
x−
+
5 265 27 2.26g
6 365 11 8.378
7 366 74
3πθ =′
8 365 6
b) I c) , 173 3π π
−
9 365 39 3.2361 10 367 111 .41 11 365 29 7 1 7 2
6 2 67 3 7 2 3 6 2 6 3
7 3 7 3 6 3 6
sin csc
cos sec
tan cot
π π
π π
π π
= − = −
= − = −
= =
12 367 109 6π−
13 366 79
2 2sin 495 cos495 tan 495 12 2
= =− =−
14 420 36 5 or 3 3
x π π=
15 365 20 11 meters 11.52 m3π ≈
16 367 130 512−
17 366 58 4 5 5 4
3 5 5 3
4 3 3 4
sin csc
cos sec
tan cot
θ θ
θ θ
θ θ
= − = −
= =
= − = −
18 365 10
b) IV c) 315 , 45−
19 423 3 1 20 420 37 , , 2 4 5 ,
3 3 3 3x π π π π=
21 420 40 , , 5 6 2 6
x π π π=
22 366 96
23 367 106
24 369 12
25 421 61 5 7 36 5 9 or 752 52 13
+ +
26 421 76 4 3 4sin2 cos2 tan25 5 3u u u=− = =−
27 423 18 , , 5 3 ,6 2 6 2π π π πα =
28 420 20 22tan 2sec tan 1x x x− + 29 421 77
( )( )( )( )
2
2
3
sin 2(2 )2sin 2 cos22 2sin cos 2cos 1
4sin cos 2cos 1
8sin cos 4sin cos
xx xx x x
x x x
x x x x
−
−
−
30 482 3 26 a=24.89, c=56.23, A∠ =
31 482 23 29.92 86.18 , 63.90, A B C∠ = ∠ = ∠ =
32 482 12 40.92 114.08 , c=8.64
139.08 15.92 , c=2.6
,
,
A C
A Cor∠ = ∠ =
∠ = ∠ =
33 483 32 1135.5 miles
34 715 45 25, 250 35 715 42 52 36 716 86 ( ) ( )
11 14412 112 1 121 131 12
nn
− −= − −
+
37 716 72 3/2 38 716 92 -3, -7, -13, -21, -31 39
40