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Mathematics, 19.08.2021 04:40 luividal37

Which of the following equations could be solved to determine the length of QR? O A) QR2 = 202 + 272 - cos 99°
B) QR2 = 202 + 272 - 2(20)(27)
C) cos 99 cos R
QR
20
D) QR2 = 202 + 272 - 2(20)(27) · cos 99°


Which of the following equations could be solved to determine the length of QR? O A) QR2 = 202 +

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