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  • Brainly User
2016-02-17T12:46:10+08:00

x = (8 cm / tan 30°) - (8 cm  / tan 40°)

x = (8 cm / 0.577) - (8 cm / 0.839)

x = 13.86 cm - 9.535 cm

x = 4.325 cm

x = 4 cm

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