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Geometry problem - GeometryProblem_2013_09_01.pdf
See attachment. My mind is in rut today. I can't solve it. Help ;-)
...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: Contacts Only | | | Voice480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food. |
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Geometry problem - GeometryProblem_2013_09_01.pdf
On 9/1/2013 1:42 PM, Jim Thompson wrote:
See attachment. My mind is in rut today. I can't solve it. Help ;-) ...Jim Thompson Define E = R + D Define F = W / X From similar triangles: Z = R * (W / X) = RF From Pythagorean theorem: R^2 = (X/2)^2 + (E - H)^2 R^2 = X^2/4 + E^2 - 2EH + H^2 Substituting E = RF R^2 = (X^2)/4 + (R^2)*(F^2) - 2HRF + H**2 Rearranging terms: R^2*(1 - F^2) + 2RFH - (X^2)/4 - H**2 = 0 Which is a simple quadratic equation in R. |
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