To find A when cot A = .4336. cot 66° 30' = .4348 = .4336 = = 12 tabular diff. for 10' 34; diff. 12 of 10'3'.5... A 66° 33'.5. .. addition To find sin 36° 23'. = = Ex. 1. Compare the four-place mantissas of the logarithms of several numbers with the corresponding five-place mantissas. Make a similar comparison between the four-place and five-place tables in the case of the trigonometric ratios of several angles. Ex. 2. In the four-place table of natural sines, etc., find sin 37° 25', tan 40° 30', cot 27° 30', cos 31° 15', sin 50° 20′, tan 63° 25', cot 74° 25', cos 51° 35'. Find the logarithms of these numbers by means of Table I. Compare the results with the values given for the logarithmic sines, etc., in Table II. and the second of Tables III. I. COMMON LOGARITHMS OF NUMBERS GIVING CHARACTERISTICS AND MANTISSAS OF LOGARITHMS OF NUMBERS FROM 1 TO 100, AND MANTISSAS ONLY OF NUMBERS FROM 100 To 10000. 107 938 979 108 03 342 383 109 743 782 110 111 112 113 05 308 346 *019 *060 *100 *141 *181 *222 *262 *302 40 423 463 503 543 583 623 663 703 40 822 862 902 941 981 *021 *060 *100 40 04 139 179 218 258 297 336 376 415 454 493 532 571 610 650 689 727 766 805 844 883 922 961 999 *038 *077*115 *154 *192 *231*269 385 423 461 500 538 576 614 652 38 123 991 *026 *061 *096 *132*167 *202 *237 *272 *307 A 43 42 A |