0.0175 0.0349 0.0523 0.0698 0.0872 0.1045 0.1219 0.1392 0.1564 0.1736 0.1908 0.2079 0.2250 0.2419 0.2588 0.2756 0.2924 0.3090 18° 19° 0.3256 0.3420 0.3584 22° 0.3746 23° 0.3907 24° 0.4067 25° 0.4226 26° 0.4384 27° 0.4540 28° 0.4695 29° 0.4848 30° 0.5000 31° 0.5150 32° 0.5299 0.5446 0.5592 0.5736 0.5878 0.6018 0.6157 0.6293 0.6428 0.6561 0.6691 0.6820 0.6947 0.7071 11° thitin istbag INmin POOR INDEK KERS 6⁰ 15° 16° 17° 21° 20° 33° 34° 35° 36° 37° 38° 39° 40 ° 41° 42° 43° 44° 45° ik (sin) (cos) 1.0000 0.0000 0.9998 0.9994 0.9986 0.9976 0.9962 0.9945 0.9925 0.9903 0.9877 0.9848 0.9816 0.9781 0.9744 0.9703 0.9659 0.9613 0.9563 0.9511 0.9455 0.9397 0.9336 0.9272 0.9205 0.9135 0.9063 0.8988 0.8910 0.8829 0.8746 0.8660 0.8572 0.8480 0.8387 0.8290 0.8192 0.8090 0.7986 0.7880 0.7771 0.7660 0.7547 0.7431 0.7314 0.7193 0.7071 三角比の表 ¡E (tan) 角 E. (sin) (cos) E (tan) 0.0000 0.7071 0.7071 1.0000 0.0175 0.7193 0.6947 1.0355 0.0349 0.0524 0.7314 0.6820 0.7431 1.0724 0.6691 1.1106 0.0699 0.0875 0.7547 0.6561 0.7660 1.1504 0.6428 1.1918 0.7771 0.6293 0.7880 1.2349 0.1051 0.1228 0.1405 0.1584 0.6157 0.7986 1.2799 0.6018 1.3270 0.8090 0.5878 0.1763 1.3764 0.8192 0.5736 1.4281 0.1944 0.8290 0.5592 0.2126 1.4826 0.8387 0.5446 1.5399 0.2309 0.8480 0.5299 1.6003 0.2493 0.8572 0.5150 1.6643 0.2679 0.8660 0.5000 1.7321 0.2867 0.8746 0.4848 1.8040 0.3057 0.8829 0.4695 1.8807 0.3249 0.8910 0.4540 1.9626 0.3443 0.8988 0.4384 2.0503 0.3640 0.9063 0.4226 2.1445 0.3839 0.9135 0.4067 2.2460 0.4040 0.9205 0.3907 2.3559 0.4245 0.9272 0.3746 2.4751 0.4452 0.9336 0.3584 2.6051 0.4663 0.9397 0.3420 2.7475 0.4877 0.9455 0.3256 2.9042 0.5095 0.9511 0.3090 3.0777 0.5317 0.9563 0.2924 3.2709 74° 0.5543 0.9613 0.2756 0.5774 75° 0.9659 0.2588 76° 0.2419 0.9703 0.6009 4.0108 77° 0.9744 0.2250 4.3315- 0.6249 78° 0.9781 0.2079 4.7046 0.6494 0.1908 5.1446 0.6745 0.9816 0.9848 0.1736 5.6713 0.7002 6.3138 0.1564 81° 0.7265 0.9877 7.115- 0.1392 82° 0.7536 0.9903 8.1443 0.1219 0.9925 83° 0.7813 9,514円 0.9945 0.1045 84 ° 0.8098 11.430 0.0872 85° 0.9962 0.8391 0.0698 14.300 0.9976 0.8693 0.0523 19.081 0.9004 87° 0.9986 0.0349 28.636 0.9325 88° 0.9994 57.290 0.9657 89° 0.9998 90° 1.0000 0.0175 0.0000 1.0000 in eteer FiREK FLERE TEEZE SL882 IN²EK Pters TER CERER 45° 46° 47° 48° 49° 50 ° 51° 52° 53° 54 ° 55° 56° 58° 59° 60° 61° 62° 63° 64° 65° 67° 68° 69° 70° 71° 72° 80°

20 問9 cos A = ≒ 0.7143 AB 14 コサインがこの値に最も近いAを171ペ A ージの三角比の表から求めると A ≒ 44° 171ページの三角比の表を用いて,次のAを求めよ。 (1) B (2) C 18 4 A 5 A 3 14 10 2 B 111