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  • 7/24/2019 TUGAS IUT

    1/5

    SOAL 1

    A(50,50)

    1A

    = 572511 d

    1A

    = 100m

    1

    = 2102211 d12 = 125m

    2= 1602211 d23 = 150m

    Tentukan koordinat ada !etia titik

    "a#a$ %

    &ntuk er'itunan $anak titik (o*ion) aitu titik 1, 2, dan 3

    !eerti di ata! maka ta'aan er'itunanna ada*a' !e$aai $erikut %

    12 =

    1A+

    1

    1-0,23

    =

    12+

    2 1-0 =

    12+

    ( )21

    +

    2 . 1-0

    12 =

    1A+

    1 1-0

    = 572511 + 2102211 1-0

  • 7/24/2019 TUGAS IUT

    2/5

    = -7/722

    23

    =12

    +

    ( )21

    + 2 . 1-0

    = -7/722 + (2102211 + 1602211) 2(1-0)

    = -7/722 + (370//22) 360

    = /5-31// 360

    = -31//

    oordinat titiktitik 1, 2 dan 3 di'itun dari titik A denan rumu! %

    1X

    =A

    X

    + d1A

    !in1A,

    1Y

    =AY

    + d1A

    o!1A

    = 50 + 100 !in 572511 = 50 + 100 o! 572511

    = 50 + 100 4 0,-/3 = 50 + 100 4 0,53-

    = 13/,26/ = 103,-/-

    2X

    =1

    X

    + d12 !in12

    ,2Y

    =1Y

    + d12 o!12

    = 13/,26/ + 125 !in -7/722 = 103,-/- + 125 o!

    -7/722

    = 13/,26/ + 125 4 0, = 103,-/- + 0,03

    = 25,171 = 10-,66

    3X

    =2

    X

    + d23 !in23

    ,

    3Y

    =2Y

    + d23 o!23

    = 25,171 + 150 !in -31// = 10-,66 + 150 o!

    3-31//

    = 25,171 + 150 4 0,- = 10-,66 22,2/3

    = /07,512 = -6,/25

  • 7/24/2019 TUGAS IUT

    3/5

    SOAL 2

    iketa'ui %

    A = (50,100)

    = (150,200)

    1

    = 5510

    2= 605015

    enentukan "arak 8 oordinat Titik 9

    "a#a$ %

    :enentuan koordinat titik 9 dari titik A dan titik menunakan rumu! %

    CX

    =A

    X

    + dA9 !inAC

    ,

    CY

    =AY

    + dA9 o!AC

    CX

    =B

    X

    + d9 !inBC

    ,

    CY

    =BY

    + d9 o!BC

  • 7/24/2019 TUGAS IUT

    4/5

    oordinatA

    X

    danAY

    ,B

    X

    danBY

    !uda' kita keta'ui maka ta'aan

    !e*an;utna ada*a' menari ;arak (dA9 dan d9) dan !udut ;uru!an (AC

    danBC

    )

    a4 enari an;an < "arak dA9 dan d9Aturan !udut !eitia

    18021 =++

    = 1-0

    ( )21

    +

    = 1-0 (551- + 605015)= 1-0 115533

    = 60/27

    ari koordinat A dan kita daat men'itun ;arak A (dA)

    dA =

    ( ) ( )( ) 5.022ABAB

    YYXX +

    =

    ( ) ( )( ) 5.022 10020050150 +

    = 1/1,/2m

    Aturan er$andinan ;arak dan !udut ada !eitia

    dA9 =

    2sin.

    sin

    dAB

    =

    "15'5060sin."27'460sin

    2,141

    = 1/2,/3-m

    $4 enari !udut ;uru!anAC

    dan

    BC

    ABX

    =AB

    XX

    = 150 50 = 100

    ABY

    =AB

    YY

    = 200 100 = 100

  • 7/24/2019 TUGAS IUT

    5/5

    AB

    =

    100

    100tan

    1

    = /5

    AB

    = /50000

    Se'ina

    AC

    =AB

    1

    = 1/051-

    BC

    =BA

    +

    2

    imanaBA

    =

    AB

    + 1-0 = 270

    BC

    = 270 +2

    = 3305015

    "adi

    CX

    = 50 + (1/2,/3-) !in (1/51-)= 15,32- mdari titik A

    CX

    = 150 + (13,/5) !in (3305015)

    = -1,-06 mdari titik

    an

    CY

    = 100 + (1/2,/3-) o! (1/51-)13-,15+100 = 23-,15 mdari titik A

    CY

    = 200 + (13,/5) o! (3305015)

    = 200 + 122,205= 322,206 mdari titik