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Mathematics 11 Online
OpenStudy (anonymous):

See attachment. Pythagorean Theorem question!

OpenStudy (anonymous):

OpenStudy (anonymous):

Find AC and BD.

OpenStudy (callisto):

BD =\[\sqrt{ 35-5^2}\]\[=\sqrt{10}\]

OpenStudy (campbell_st):

triangles CDB and BDA are similar by angle angle test then the ratio of corresponding sides can be used to find DA \[DA/\sqrt{10} = \sqrt{10}/5\] DA = 2 so AC = 7

OpenStudy (campbell_st):

or \[DA/BD = BD/CD\]

OpenStudy (anonymous):

Sorry!

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