2 years ago

SOMEONE PLEASE HELP!!

Mathematics

2 answers:

lesya692 [45]2 years ago

8 0

First you need the size of an angle QPR = B = 180° - 123°
Lenght of QP = 10cm
QR = x
QP = r
x² = r² + r² - 2r² × cosB

Rina8888 [55]2 years ago

8 0

Answer:19.9

Step-by-step explanation:

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