1. 180 - 57 = 123°
123 = 2x + 5
123 - 5 = 2x
118 = 2x
118/2 = x
59 = x
(2 x 59) + 5 = 123°
2. 180 - 90 = 90°
90 = 3r + 2r
90 = 5r
90/5 = r
18 = r
3 x 18 = 54°
3. 90 - 62 = 28°
x = 28°
4. (360 - 80) / 2
280 / 2 = 140°
5. 90 = 2x + 8 + x + 13
90 = 3x + 21
90 - 21 = 3x
69/3 = x
23 = x.
Maka, x adalah 23°.
(23 × 2) + 8 = 54°.
maaf kalau salah...
Jawab:
Penjelasan dengan langkah-langkah:
1. ∠ADC= 180°-57°= 123°
jadi, 2x+5=123°
2x=(123-5)°
2x=118°
x=59°
2.SQT??
3.E=180-62-90=28°
4.∠ATC=80÷2=40°
∠ATD=180-40=140°
5.
(2X+8)+ (X+13)=90°
3X+21 = 90°
3X = 90-21
3X = 69°
X = 23°
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1. 180 - 57 = 123°
123 = 2x + 5
123 - 5 = 2x
118 = 2x
118/2 = x
59 = x
(2 x 59) + 5 = 123°
2. 180 - 90 = 90°
90 = 3r + 2r
90 = 5r
90/5 = r
18 = r
3 x 18 = 54°
3. 90 - 62 = 28°
x = 28°
4. (360 - 80) / 2
280 / 2 = 140°
5. 90 = 2x + 8 + x + 13
90 = 3x + 21
90 - 21 = 3x
69/3 = x
23 = x.
Maka, x adalah 23°.
(23 × 2) + 8 = 54°.
maaf kalau salah...
Jawab:
Penjelasan dengan langkah-langkah:
1. ∠ADC= 180°-57°= 123°
jadi, 2x+5=123°
2x=(123-5)°
2x=118°
x=59°
2.SQT??
3.E=180-62-90=28°
4.∠ATC=80÷2=40°
∠ATD=180-40=140°
5.
(2X+8)+ (X+13)=90°
3X+21 = 90°
3X = 90-21
3X = 69°
X = 23°