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`        From a window {h meters above the ground} of a house in a street the angles of elevation and depression of the top and the foot of another house of opposite side  of the street are 'a' and 'b' respectively. Show that the opposite height of house is h(1 + tan a cot b).`
6 years ago

Rhinithaa PT
19 Points
```										tanb= h/x
x= h/tanb = hcotb----- 1
tana= y/x
y= x*tana -----2
substituting for x
y= h*cotb*tana
therefore total height of the building = h+y
h+y = h + h*cotb*tana
h +y = h( 1+cotb*tana)
hence proved
```
6 years ago
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