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> karena sudut yang saling berseberangan = sama, maka
x° = 40°
Sudut Q = 90°
y° berseberangan dengan ∠Q - 60°
sehingga
y° = 90° - 60°
y° = 30°
Hasil akhir, (x°,y°) = (40°,30°)
Semoga membantu :)