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The School of Athens
Euclid, as imagined by Raphael in this detail from The School of Athens.
Jamshed Al-Kashi
Al-Kashi was one of the greatest mathematicians of the 15th century, calculating the sin(1*) correct to 16 decimal places.
Al-Beruni
The 11th century scientist and philosopher managed to estimate the radius of the earth using a very creative method that employed trigonometry.
6 comments:
For number 7, can someone refresh my memory on finding the area of a hexagon? I know it has something to do with the triangles...
can someone help me with 4? I'm not sure what the altitude of the prism is.
never mind i think i got it
for 5 and 9, how do you find the heights of the trapezoids and the triangles to find the areas of the bases? maybe i am just forgetting something
virginia, for number 9, the height is given, and for number 5, the height is the same as the length of the prism. Hope this helps.
For number 7, consider a regular hexagon as consisting of two trapezoids.
As for 5, think of the nature of the trapezoid. It's an isosceles trapezoid and so consider it's height as that of the height of an isosceles triangles height. If you split it then it forms two right triangles.
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