Tolong bantu jawab kak,sebentar lagi dikumpulkan:’​

Jawaban:

3r + 4r – 8 = 90

7r = 98

r = 14°

….

STI = 4r – 8 = 4(14) – 8 = 48°

HTI = 3r = 3(14) = 42°

Jawaban:

a. (4r – 8)° + 3r = 90°

7r – 8 = 90°

7r = 90° + 8°

7r = 98°

r = 14°

b. < STI = 4r – 8

= 4(14) – 8

=56 -8

= 48°

c. < HTI = 3r

= 3(14)

= 42°