CHAPTER VII.

Art. 55. 2. b = 70.8, α = =56.1. 4. b = c = 5.464.

185, c = 192.

5. b = 8.237,

Art. 56. 2. B = 36° 18.4′ or 143° 41.6', c = 52.71 or 5.98. 48° 25' or 131° 35'.

Art. 57. 3. A = 80° 46.44', C = 63° 48.56'. S=100° 56.67', b = 39.56.

4. R33° 3.33',

7. B = 46° 52' 10", C=111° 53′ 25′′, c = 1767.3, or B = 133° 7′ 50′′, C =

Art. 67. 1. 11977.8 sq. ft.; 46° 13.8', 133° 46.2'; 111.3 ft., 149.1 ft. 4. 73° 30.7', 106° 29.3′; area = 587637.5 sq. metres (approximately).

CHAPTER IX.

etc. 5. 135°, 900°, - 240°, - 165°, - 4500°. 229° 10' 59.2", 171° 53′ 14.4", 19° 5' 54.9", etc.

90°, 60°, 45°, 30°, 36°,

7. 28° 38′ 52.4',

1, 1, √2, √2; π, 0, −1, 0, −∞, −1, ∞ ;

10 a. 3.75. 11. The interior angles of the polygons are respec

tively,,,, π, π, π, 1π. ዝ

1r 7920'

26".

20r 12. (1) 163° 42′ 8.3"; (2) 9 7

1r 14'

13. 10, 5, 2.5, §§, 1.25, §, §, 1, 20, 30, 25,

4° 5' 33.2"; (3)
26 in. 15. 10, 40, 70, 80, 120, 5, 3.75, 1.25 in.

CHAPTER X.

Art. 83. 4. 238,890 mi. (approximately), 347.5.

5. About 57' 2"; 7. 206,265 times the distance 8. 9 ft. 2.6 in. 9. 76 ft. 9.5 in.

11. 15.708 yd. 12. 13' 1.3".

CHAPTER XI.

Art. 85. 3. 0=n+(−1)", 60°, 120°, 420°, 480°. 4. nπ+(−1)n+1T

210°, 330°, 570°, 690°.

Art. 86. 2. 2 nπ

5. n. 180°+(−1)n 72° 30', 107° 30', 432° 30′, 467° 30'.

7° 40', 7° 40', 352° 20', 367° 40', 712° 20'. 5. n. 360° ± 136° 35', 136° 35', 223° 25', 496° 35', 583° 25'.

π

Art. 87. 2. nπ + + n. 180° +60°, 60°, 240°, 420°, 600°. 3. n. 180° +

" 3

20° 10', 20° 10', 200° 10', 380° 10′, 560° 10'. 6. n. 180° 138°, 138°, 318°, 498°, 678°.

Art. 89. 11 (first part). (a) .97302; (b) ±.97302, ±.12117. 12. 43° 5.5'.

7. n. 180°+36° 52.2'.

63° 26', (4 n 1) 45°.

3

2 8

8. n. 180° +63° 26', n · 180°-71° 33.9′. 9. n. 180°+

n. 360°-46° 23.85'. 12. (2n+1)90°, {4n+(-1)"}15°. 13. {6n+(-1)"}30°, {10 n+(-1)"} 18°, {10 n-3(-1)"} 18°. 14. no± ±7, nx ± 7. 15. nw ± 7,

π

4

пп

π

3

35',

LOGARITHMIC AND TRIGONOMETRIC

TABLES

FIVE-PLACE AND FOUR-PLACE