Points Flagstaff
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Vintage View of ELSINORE, CA, From Flagstaff Point
$5.98 |
Points Flagstaff
Please solve the math question of class X following.?
A tower is x meters from the top of a mast on top. The tower and Flagstaff underlying equal angles at a point in meters, and foot of the tower. Show that the length of the mast is x (y ^ 2 + x ^ 2) / y ^ 2 – x ^ 2
A = angle subtended L = length of the shaft Tana = x / y = tan2 (2tan) / (1-tan ² A) = (x + L) / y 2 (x / et) / (1-x ² / y ²) = (x / y) + L / L y / y = 2 (x / y) / (1-x ² / y ²) – (x / y) L = 2x / ( 1-x ² / y ²) – 2xy x = L ² / (Y ² – x ²) – x L = [2xy ² - X (y ² - x ² ²)]/( y – x ²) = L (2xy ² – x ² + x ³) / (y ² — ² x) = L (x ² + x ³) / (y ² – x ²) L = X (X ² + Y ²) / (y ² – x ²) (It is interesting that the angle subtended to be equal and should be greater than x. This is reasonable because, if X = Y, the angle is 45 °. For the mast underpin the other 45, Total of 90 ° would require that the mast be infinitely high.)
eBay
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Vintage View of ELSINORE, CA, From Flagstaff Point
$5.98 |
