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Mathematics 55 Online
OpenStudy (anonymous):

Which is the best estimate of the angle? 40 75 105 140

OpenStudy (anonymous):

jimthompson5910 (jim_thompson5910):

any ideas?

OpenStudy (anonymous):

40?

OpenStudy (anonymous):

This a right angle (90) so if that one is smaller the answer can't be bigger then 90. |dw:1343098568020:dw|

jimthompson5910 (jim_thompson5910):

yes either that or 75

jimthompson5910 (jim_thompson5910):

since both are less than 90

OpenStudy (anonymous):

40 right?

jimthompson5910 (jim_thompson5910):

but if you carefully draw it out, you'll see that it's roughly half of that right angle drawn above

jimthompson5910 (jim_thompson5910):

and since 40 is close to 45 (which is half of 90), I'd go with 40 as well

OpenStudy (anonymous):

heres a picture |dw:1343098675100:dw|

OpenStudy (anonymous):

|dw:1343105899420:dw| wouldnt that be 75

OpenStudy (anonymous):

|dw:1343098757332:dw|

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