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cyndalulu3637
17.06.2021 •
Mathematics
PQR is a triangle. PR= 23cm, PQ= 22cm and angle QPR= 48 degrees. Calculate length of QR.
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Ответ:
The length of QR is approximately 18.3 cm
Step-by-step explanation:
The given parameters are;
The length of the side PR = 23 cm
The length of the side PQ = 22 cm
The measure of the angle QPR = 48°
By cosine rule, we have;
Plugging in the values gives;
The length of QR ≈ 18.3 cm
Ответ: