tolong bantu ya kak no 1 aja plisss tolong jwb yg bener ya kak (yg jwb ga bnr/ asal" an ya poin nya haram ya banh) makasih yg udh jwb bener
nilai x = 15°
nilai <PQR = 45°
nilai <RQS = 120°
Penjelasan dengan langkah-langkah:
(3x)° + (2x + 60)° + 45° = 180°
(3x + 2x)° + (60 + 45)° = 180°
5x° + 105° = 180°
5x° = 180° - 105
5x° = 75
x° = 75/5
x° = 15°
besar PQR, sibtusi nilai 15 pada x
<PQR = (3x)°
<PQR = (3(15)°
<PQR = (3×15)°
<PQR = 45°
nilai <RQS :
<PQR + x° + <RQS = 180°
45° + 15° + <RQS = 180°
45° + <RQS = 180° - 15°
45° + <RQS = 165°
<RQS = 165° - 45°
<RQS = 120°
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