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12-01-2017
Mathematics

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[15 POINTS] FIND THE LENGTH OF SIDE AB IN THE TRIANGLE SHOWN

15 POINTS FIND THE LENGTH OF SIDE AB IN THE TRIANGLE SHOWN class=

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12-01-2017

Using Pythagoras theorem, we have
AC^2=AB^2+BC^2
(9)^2=AB^2+(7)^2
81=AB^2+49
81-49=AB^2
32=AB^2
√32=AB

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