Jawaban:
Sinar databg 42
Sinar pantul 42
Penjelasan:
Sudut datang = sudut pantul
84 : 2 = 42
Jadi masing2 sudut
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Jawaban:
Sinar databg 42
Sinar pantul 42
Penjelasan:
Sudut datang = sudut pantul
84 : 2 = 42
Jadi masing2 sudut