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Mathematics 8 Online
OpenStudy (anonymous):

The remedy is experience.. And I don't have any.. Help please ?

OpenStudy (paxpolaris):

First find the length of BD using △BCD

OpenStudy (paxpolaris):

using Pythagorean theorem

OpenStudy (paxpolaris):

\[BD^2=18^2+24^2\]\[\therefore BD=\sqrt{18^2+24^2}\] (you can remove the common factor of 18 and 24 out to make the math easier)\[\implies BD = 6\sqrt{3^2+4^2}=6\sqrt{25}=\Large 30 ft.\]

OpenStudy (anonymous):

Thanks :)

OpenStudy (paxpolaris):

Then to find AD you need to know trigonometry ....OR at-least the ratios of the sides of 30-60-90 triangles.

OpenStudy (anonymous):

Do what ?

OpenStudy (paxpolaris):

|dw:1333147962445:dw| In 30-60-90 triangles the ratios of the sides is always \[\Large 1:\sqrt3:2\]

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