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Student XI IPA
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Student XII IPA
tos (x-30 ) = -1 2 tos (x-30 )= 180-60=120 X-30° = 120 tk.360° x=270'tk. 360° X = 120 + 30 tk. 360 X . = 150° + K - 360° . K=0 150 Hp • [150 270 } K-O -- 270 =
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