Question

tolong jawan nomor 1 dan 2 beserta caranya ​

Answer 1

Penjelasan dengan langkah-langkah:

no 1.

a) pengiku = 90°

• 20° : 90-20 = 20°
• 30° : 90-30 = 70°
• 60° : 90-60 = 30°

b) pelurus = 180°

• 180-50 = 130°
• 180-70 = 110°
• 180-100 = 80°

no 2.

1) 3r + 40 + 5r - 20 = 180°

8r + 20 = 180

8r = 180-20

8r = 160

r = 160/8

r = 20°

2) SMT = 3r + 40

= 3(20) + 40

= 60+40

= 100°

3) GMT = 5r - 20

= 5(20) - 20

= 100-20

= 80°