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Mathematics 8 Online
OpenStudy (anonymous):

How?

OpenStudy (anonymous):

OpenStudy (anonymous):

Rounded to the nearest whole number, what is the height, in feet, of the flagpole AB?

sam (.sam.):

First add those angles up, Then Use cos, \[\cos( \theta)=\frac{adjacent}{hypotenuse}\]

OpenStudy (amistre64):

cosine?

OpenStudy (amistre64):

we have rise and run, height and distance ... tangent works faster with those

sam (.sam.):

whoops , yeah you should use tan

OpenStudy (anonymous):

How do you use any of them when you only know one line length?

OpenStudy (amistre64):

becasue you also know angles

sam (.sam.):

\[\tan \theta=\frac{opposite}{adjacent}\]

OpenStudy (amistre64):

tan(a) = h/d d tan(a) = h

OpenStudy (anonymous):

so 16 tan60 = x?

OpenStudy (amistre64):

that would equal the overall height; now subtract the building height to get the reminang flagpole stuff

OpenStudy (anonymous):

12 is the answer.

OpenStudy (anonymous):

thanks so much!

OpenStudy (amistre64):

yw

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