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Himanshu Bhadauriya

· started a discussion

· 1 Months ago

wrong solution (Question: 173353.0 )

In question shadow of a house is 100 meter in solution you take height of house is 100

Question:
When the sun is 30° above the horizontal, the length of shadow cast by a building 100 m high is:
Options:
A) 100\(\sqrt{3}\) metre
B) \(\cfrac{100}{\sqrt{3}}\) metre
C) 50 metre
D) 50\(\sqrt{3}\) metre
Solution:
Ans: (a) Let AB be the building and AC be its shadow.

AB = 100 m and θ = 30°

∴ \(\cfrac{AB}{AC}\) = tan30° = \(\cfrac{1}{\sqrt{3}}\)

 ∴ \(\cfrac{AB}{AC}\) = tan30° = \(\cfrac{1}{\sqrt{3}}\) 

⇒ AC = AB\(\sqrt{3}\) = 100\(\sqrt{3}\) metre


Knowledge Expert

· commented

· 1 Months ago

Dear student
We resolved it.

Best wishes
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