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Verified answer
Kelas 11 MatematikaBab Trigonometri
PR/sin Q = QR/sin P
(6√2)/sin Q = 12 / sin 45°
Sin Q = ( 1/2 √2 . 6 √2 .) / 12
Sin Q = 6/12
Sin Q = 1/2
∠Q = 30°
Sudut R
= 180° - 45° - 30°
= 105°