please answer Q6 & Q7...ITS REALLY URGENT!!!
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{6} Let h be the height of the hill and x m be the distance between the foot of the hill and foot of the tower.
In rt.△ABC,
Cos 60° = x/hx = h cot 60°........(i)
In rt.△DBC,
cot 30° = x/50x = 50
cot 30°........(ii)Equating (i) and (ii)
h cot 60° = 50 cot 30°h
= 50 cot 30°/cot 60°h
= 50 × √3/1√3
= 50 × 3 = 150 m
Therefore the height of the hill is 150 m.
Hope it helps u.
In rt.△ABC,
Cos 60° = x/hx = h cot 60°........(i)
In rt.△DBC,
cot 30° = x/50x = 50
cot 30°........(ii)Equating (i) and (ii)
h cot 60° = 50 cot 30°h
= 50 cot 30°/cot 60°h
= 50 × √3/1√3
= 50 × 3 = 150 m
Therefore the height of the hill is 150 m.
Hope it helps u.
shraddha33204:
is this q. from goyal
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by Sujeet yaduvanshi ✌
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