72
정답과 풀이 본문 | 7, 9 쪽개념
콕콕
00
1
⑴ ;1!7%; ⑵ ;1¥7; ⑶ ;;Á8°;; ⑷ ;1¥7; ⑸ ;1!7%; ⑹ ;1¥5;00
2
⑴ '7 ⑵ sin`C= '4 ,cos`C=7 34 , tan`C= '7 300
3
⑴ 10 ⑵ 800
4
⑴ BCÓ, ACÁÓ, ACªÓ⑵ ACÓ, ACÁÓ, ABªÓ ⑶ BCÓ, ABÁÓ, BªCªÓ
00
5
⑴ 32 ⑵ 0 ⑶ 32 ⑷ '200
6
⑴ 60ù ⑵ 45ù ⑶ 60ù ⑷ 30ù ⑸ 60ù ⑹ 45ù00
7
⑴ 5'2 ⑵ 2'3 ⑶ 4 ⑷ 10 ⑸ 6 ⑹ '700
8
⑴ BCÓ ⑵ ACÓ ⑶ DEÓ ⑷ ACÓ⑸ BCÓ ⑹ BCÓ
00
9
⑴ 0.6428 ⑵ 0.7660 ⑶ 0.83910
10
⑴ 1 ⑵ 0 ⑶ 0 ⑷ 30
11
⑴ > ⑵ = ⑶ < ⑷ =0
12
⑴ < ⑵ > ⑶ <0
13
⑴ < ⑵ > ⑶ <0
14
⑴ 0.2924 ⑵ 0.9659 ⑶ 0.28670
15
⑴ 66ù ⑵ 63ù ⑶ 65ù Ⅰ. 삼각비1.
삼각비
본문 | 10 ~ 20 쪽유형
콕콕
0
16
⑤0
17
④0
18
'5 20
19
316'70
20
①0
21
3'13 130
22
1580
23
4'23 230
24
90
25
200
26
32'30
27
'470
28
④0
29
②0
30
6 70
31
'10100
32
3'5 50
33
40
34
8 150
35
12 50
36
1 50
37
3 20
38
7 40
39
3'5 5 본문 | 21 ~ 23 쪽실력
콕콕
0
99
③100
3101
3 5102
1103
- 5 13104
6105
4'2 9106
213'5107
1 3108
④109
8110
'33111
2'3112
2'3113
12'3 cmÛ`114
y='3 x+5115
③116
1 4117
⑤118
⑤119
②120
①121
27.8122
5'26 26 본문 | 24 ~ 25 쪽서술형
콕콕
123
2'5 5124
'42125
7 5126
3'3 2127
4'3128
4'6129
9 10130
2'5131
'2 2132
'2 3133
'33134
'30
40
7 50
41
1580
42
④0
43
5 130
44
4 50
45
1 50
46
2'5 90
47
'360
48
'320
49
7 90
50
3 20
51
00
52
②0
53
②0
54
40
55
70
56
1 20
57
20
58
30ù0
59
30ù0
60
②0
61
00
62
2'30
63
30
64
2'30
65
6'60
66
4'70
67
③0
68
6'3 cmÛ`0
69
9 20
70
③0
71
'2-10
72
①0
73
y='3 3 x+'30
74
y=x-70
75
60ù0
76
①0
77
③, ⑤0
78
③0
79
④0
80
1.750
81
④0
82
③0
83
20
84
3 20
85
④0
86
③0
87
③0
88
ㄴ, ㄷ, ㄱ, ㄹ, ㅁ0
89
⑤0
90
①0
91
00
92
60ù0
93
②0
94
1.13560
95
2.96380
96
⑤0
97
③0
98
1.9578 본문 | 30 ~ 36 쪽유형
콕콕
147
5.64148
12.3149
②150
②, ③151
⑤152
②153
8'3 3 p cmÜ`154
11.55 m155
4.76 m156
②157
(10'3+30)m158
67.5 m159
12 m160
25초161
'21162
2'31`m163
13164
'37165
9'6166
2'6167
20'2168
(20'2+20'6)`m169
5(3-'3)`cm170
10('3-1)`m171
3.2172
36(3-'3)`cmÛ`173
3'3174
①175
(3+'3 )`km176
8`cmÛ`177
③178
15'3 cmÛ`179
45ù180
18'3`cmÛ``181
20`cmÛ`182
7'3 cmÛ`183
125'2 cm184
21'3`cmÛ`185
③186
150ù187
16p-12'3188
232'3189
24190
6'3191
65'3 본문 | 27, 29 쪽개념
콕콕
135
⑴ a`sin`B ⑵ ca , a`cos`B ⑶ bc , c`tan`B ⑷ a`sin`C ⑸ ;aB;, cos`C ⑹ ;bC;, b tan`C c136
⑴ 12, 6'3 ⑵ 8, 4'2 ⑶ 2, 2'3137
⑴ x=6.7, y=7.4 ⑵ x=2.7, y=4.2138
⑴ 5'3 cm ⑵ 5 cm ⑶ 10'3 cm139
⑴ 45ù ⑵ 3 cm ⑶ 3'2 cm140
⑴ '3 h ⑵ h ⑶ 4(3-'3 )3141
⑴ '3 h ⑵ h ⑶ 5('3 +1)142
⑴ 5 ⑵ 30143
⑴ 10'2 ⑵ ;2(;144
⑴ 12'3 ⑵ 28'2145
⑴ 20 ⑵ 70'2146
⑴ 20'2 ⑵ 302.
삼각비의 활용
BOB중등 3나-정답.indb 72 19. 12. 10. 오후 3:12빠른 정답
73
빠른 정답 본문 | 48 ~ 56 쪽유형
콕콕
249
4'5`cm250
26p`cm251
⑤252
12`cmÛ`253
13`cm254
10'3`cm255
25 3256
⑤257
10258
6`cm259
6`cm260
24'6`cmÛ`261
②262
8`cm263
120ù264
8`cm265
18266
'15`cm267
10'6`cmÛ`268
64ù269
8270
110ù271
38`cm272
6`cm273
2'6`cm274
30`cmÛ`275
④276
52ù277
11 3 p`cm278
20ù279
23p`cmÛ`280
2'21`cm281
12p`cmÛ`282
120`cmÛ`283
5'3`cm284
3`cm285
⑤286
5`cm287
24`cm288
2'10`cm289
24`cm290
4291
78`cmÛ`292
⑤293
②294
③295
4`cm296
14`cm297
44`cm298
6`cm299
④300
③192
70'2`cmÛ`193
18`cmÛ`194
60ù195
3'3`cmÛ`196
12'2`cmÛ`197
②198
45ù199
4'2`cm 본문 | 37 ~ 39 쪽실력
콕콕
200
⑤201
③202
89.91 m203
6 m204
2'13 cm205
④206
(3-'3)`km207
9('3-1)208
4('3+1) cmÛ`209
'2 2210
48`cmÛ`211
3 2배212
4`cm213
6`cmÛ`214
50'2`cmÛ`215
3 5216
64'3217
52'3218
30'3`cmÛ`219
16 cm220
30'2`cmÛ`221
91'3222
28 cmÛ`223
1 m 본문 | 40 ~ 41 쪽서술형
콕콕
224
8 m225
10.6 m226
4'6 cm227
10 cm228
154'3229
24 5230
'19 cm231
2'13 cm232
44'3233
30'3234
5'2 2235
3'2 본문 | 45, 47 쪽개념
콕콕
236
∠OMB, OBÓ, OMÓ, BMÓ237
⑴ 7 ⑵ 8238
⑴ 2'5 ⑵ 3'3 ⑶ 10 ⑷ 5239
⑴ 4`cm ⑵ 10`cm240
⑴ 7 ⑵ 2241
⑴ 10 ⑵ 9 ⑶ 5 ⑷ 3242
⑴ 65ù ⑵ 105ù243
⑴ 4 ⑵ 5'5244
⑴ 12`cm ⑵ 15`cm245
⑴ 84ù ⑵ 59ù246
⑴ 2`cm ⑵ 7`cm ⑶ 4`cm ⑷ 11`cm247
10, 8-r, 10, 8-r, 2 / 그림에서 8-r, 8-r248
⑴ 5 ⑵ 9 ⑶ 3 ⑷ 8 Ⅱ. 원의 성질1.
원과 직선
본문 | 57 ~ 59 쪽실력
콕콕
315
16p`cm316
③317
6'2318
32`cmÛ`319
2'30`cm320
25'3`cmÛ`321
④322
24`cm323
36'3`cmÛ`324
36p`cmÛ`325
51ù326
6'10 5 `cm327
20'3`cm328
21'5`cmÛ`329
60ù330
2`cm331
12`cm332
⑤333
63`cmÛ`334
3'2`cm335
10`cm336
2337
18338
50`cm301
4p`cmÛ`302
6`cm303
③304
18`cm305
34`cm306
2`cm307
③308
⑤309
②310
6`cm311
③312
(18-4'14)`cm313
③314
12('2-1)p`cm 본문 | 60 ~ 61 쪽서술형
콕콕
339
15p`cm340
100p`cmÛ`341
25p`cmÛ`342
7p`cmÛ`343
3`cm344
4`cm345
40`cm346
30`cm347
15`cm348
19`cm349
8 3350
10 BOB중등 3나-정답.indb 73 19. 12. 10. 오후 3:1274
정답과 풀이 본문 | 72 ~ 73 쪽서술형
콕콕
421
52ù422
88ù423
45ù424
50ù425
18+6'3426
12+4'3427
40ù428
26ù429
12p430
20p431
120ù432
100ù 본문 | 70 ~ 71 쪽실력
콕콕
405
25`cm2406
③407
61ù408
30p`cm2409
③410
85ù411
17ù412
10ù413
2'5 9414
4'3`cm415
36ù416
23ù417
16 3 p`cm418
96ù419
4 9배420
(100+150p)`mÛ` 본문 | 63 쪽개념
콕콕
351
⑴ 62ù ⑵ 116ù ⑶ 80ù ⑷ 47ù352
⑴ 32ù ⑵ 22ù353
⑴ 28ù ⑵ 34 ù354
⑴ 25 ⑵ 3355
⑴ 40 ⑵ 8356
⑴ 40 ⑵ 20 ⑶ 24 ⑷ 152.
원주각
⑶⑷⑸⑹⑺ 본문 | 64 ~ 69 쪽유형
콕콕
357
36ù358
39ù359
③360
44ù361
3p`cmÛ`362
①363
7`cm364
24ù365
③366
②367
246ù368
128ù369
68ù370
56ù371
119ù372
110ù373
78ù374
60ù375
⑤376
③377
25ù378
③379
25ù380
20ù381
⑤382
28ù383
57ù384
48ù385
105ù386
④387
80ù388
70ù389
2'5 5390
7 5391
4'5392
8p393
②394
30ù395
100ù396
65ù397
3`cm398
104ù399
40ù400
39401
56ù402
60ù403
15ù404
18p`cm 본문 | 78 ~ 85 쪽유형
콕콕
444
④445
②446
10ù447
①448
70ù449
⑤450
135ù451
③452
117ù453
28ù454
②455
170ù456
②457
140ù458
35ù459
③460
79ù461
②462
140ù463
58ù464
④465
130ù466
85ù467
70ù468
100ù469
110ù470
306ù471
15ù 본문 | 86 ~ 87 쪽실력
콕콕
503
④504
③505
10ù506
④507
140ù508
③509
⑤510
⑤511
32'3`cmÛ`512
②513
71ù514
22ù515
75ù516
46ù517
65ù518
44ù 본문 | 88 ~ 89 쪽서술형
콕콕
519
118ù520
110ù521
125ù522
112ù523
262ù524
249ù525
53ù526
62ù527
115ù528
110ù529
16ù530
22ù 본문 | 75, 77 쪽개념
콕콕
433
ㄴ, ㄹ434
⑴ 52ù ⑵ 120ù435
⑴ 115ù ⑵ 110ù ⑶ 108ù ⑷ 105ù436
⑴ 120ù ⑵ 100ù437
ㄷ438
⑴ 120ù ⑵ 67ù439
⑴ ∠x=93ù, ∠y=80ù ⑵ ∠x=60ù, ∠y=115ù440
⑴ 85ù ⑵ 30ù ⑶ 75ù ⑷ 130ù ⑸ 62ù ⑹ 68ù441
⑴ ∠x=80ù, ∠y=60ù ⑵ ∠x=45ù, ∠y=80ù ⑶ ∠x=49ù, ∠y=98ù ⑷ ∠x=54ù, ∠y=54ù442
⑴ ∠x=47ù, ∠y=73ù ⑵ ∠x=75ù, ∠y=60ù ⑶ ∠x=70ù, ∠y=70ù ⑷ ∠x=63ù, ∠y=63ù443
⑴ 60ù ⑵ 58ù3.
원주각의 활용
472
140ù473
106ù474
③475
35ù476
ㄷ, ㅁ, ㅂ477
90ù478
35ù479
60ù480
30ù481
38ù482
4'3`cmÛ`483
31ù484
108ù485
20ù486
110ù487
42ù488
96ù489
26ù490
25ù491
60ù492
5493
56ù494
71ù495
55ù496
60ù497
49ù498
②499
100ù500
48ù501
⑤502
40ù BOB중등 3나-정답.indb 74 19. 12. 10. 오후 3:12빠른 정답