C.cosa.,. 0.05788 tanga

tang Al.... 9.9338» sin Al... 9.80807

tang TB = 4a" a8' 33''... 9.96169 tang AB = 1 5" 40' a8" . . . 0.44810

D=AC = 3o

sin(D— J'JsrBC = 14.19. 5a. .. . 9.39345 sin B... 9.97858 sin A = sinCD = xa.37.ao. . . . 9.37203

sin a. . . g.6oai5 cos Al... g.884a5

sin a cos Al = cos B =73. 9.10 9.48640

tangBC... 9.40717

tang BD = 4.a8.3i Ü89357

TB=4a.a8.33