Tugas 1 Ilmu Ukur Tanah, Tenik sipil

Ditanya..?

Bandingkan perhitungan tabel dengan manual

1. Nyatakan 131^g 36^cg 78^cc kedalam ukuran seksagesimal ?

2. Nyatakan 1,88 radian kedalam ukuran seksagesimal?

3. Nyatakan 56⁰ 18’ 45” kedalam ukuran sentisimal?

Jawab :

1.       131^g 36^cg 78^cc ke seksagesimal……..?

Dengan manual :

-          131^g x 360/400  = 117,90⁰ 
                   0,90⁰ x 60 = 0,54’   ditulis   =  117⁰.54'

-          36^cg x (360x60/400x100) = 19,44
                 0,44’ x 60 = 0,26.4”  ditulis  =        0.19'.26,4"

-          78^cc x (360x60x60/400x100x100) = 25.27”
                                                   ditulis  =              0.25,27"
                                       ----------------------------------- + 
                                                              =   117⁰.73'.51,67"

Dengan Tabel :

-          131^g                   =  117⁰.54’

-          36^cg                    =       0.19’.26,4’’

-          78^cc                    =             0.25,3”

-------------------------------------------- +

                                 =  117^o.73’.51,7”

2.      1,88 radian ke seksagesimal..?

Dengan maual :

            1,88 radian      =  1,88 x 360/2π

                                    =  107,77070⁰   ditulis = 107⁰

             0,77070  x 60 =   46,24200’   ditulis  =         .46’

             0,24200  x 60 =    15,52”        ditulis  =              .14,52”

                                                                 ------------------------+

                                                                          107⁰.46’.14,52”

Dengan  tabel :

107⁰.46’.14,52”   --->  100⁰ =  1,7453293

                                       07⁰ =  0,1221730

                                       46’ =  0,0133809

                                       14” =  0,0000679

                                    ----------------------------+

                                              = 1,8809511 radian

                        Atau              = 1,88  radian

3.      56⁰.18’.45” ke sentisimal…?

Dengan manual :

            560 x 400/360                                     =  62. 22. 222^g

            18’  x (400x100/360x60)                    =         33. 333^cg

            45” x ( 400x100x100/360x60x60)      =           1.  388,88^cc

                                                                        -------------------------+

                                                                        = 62^g.56^cg.943,88^cc

            Dengan tabel :

                        56⁰  = 62.22.222^g

                        18’  =      .33.333^cg

                        45”  =      .01.389^ccg

                        ------------------------------+

                                =  62^g.56^cg.944^cc