Jawaban:
3. besar sudut penyiku : 90°
(6x+4)+(5x+9) = 90°
(6x+5x) +(4+9) = 90°
11x + 13 =90
11x = 90-13
11x = 77
x = 77/11
x = 7
besar sudut AQC =
6x + 4 = 6(7) + 4
= 42 +4
= 46
4.besar sudut pelurus : 180°
(8x-20)+(4x+8) = 180
(8x+4x) +(-20+8) =180
12x -12 =180
12x = 180 +12
12 x= 192
x = 192/12
x = 16
besar sudut AOC=
8x - 20 = 8(16) -20
= 128 -20
= 108
[tex](6x + 4)° + (5x + 9)° = 90°[/tex]
[tex]11x° + 13° = 90°[/tex]
[tex]11x° = 77°[/tex]
[tex]x = 7°[/tex]
[tex] = 6(7°) + 4°[/tex]
[tex] = 42° + 4°[/tex]
[tex] = 46°[/tex]
_____________________________________
[tex](8x - 20)° + (4x + 8)° = 180°[/tex]
[tex]12x° - 12° = 180°[/tex]
[tex]12x° = 192°[/tex]
[tex]x = 16°[/tex]
[tex] = 8(16°) - 20°[/tex]
[tex] = 128° - 20°[/tex]
[tex] = 108°[/tex]
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Jawaban:
3. besar sudut penyiku : 90°
(6x+4)+(5x+9) = 90°
(6x+5x) +(4+9) = 90°
11x + 13 =90
11x = 90-13
11x = 77
x = 77/11
x = 7
besar sudut AQC =
6x + 4 = 6(7) + 4
= 42 +4
= 46
4.besar sudut pelurus : 180°
(8x-20)+(4x+8) = 180
(8x+4x) +(-20+8) =180
12x -12 =180
12x = 180 +12
12 x= 192
x = 192/12
x = 16
besar sudut AOC=
8x - 20 = 8(16) -20
= 128 -20
= 108
besar sudut penyiku adalah 90° , maka
[tex](6x + 4)° + (5x + 9)° = 90°[/tex]
[tex]11x° + 13° = 90°[/tex]
[tex]11x° = 77°[/tex]
[tex]x = 7°[/tex]
sudut AQC
[tex] = 6(7°) + 4°[/tex]
[tex] = 42° + 4°[/tex]
[tex] = 46°[/tex]
besar sudut penyiku AOC adalah 46°
_____________________________________
besar sudut pelurus adalah 180° , maka
[tex](8x - 20)° + (4x + 8)° = 180°[/tex]
[tex]12x° - 12° = 180°[/tex]
[tex]12x° = 192°[/tex]
[tex]x = 16°[/tex]
sudut AOC
[tex] = 8(16°) - 20°[/tex]
[tex] = 128° - 20°[/tex]
[tex] = 108°[/tex]
besar pelurus sudut AOC adalah 108°