The angle of elevation of a cloud from a point h metre above a lake is θ. The angle of depression of its reflection in the lake is 45°. The height of the cloud is
In Δ BCD
d = H (∵ tan 45° = 1)
In Δ AED
H tan θ = H – h
h = H (1- tan θ)
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The angle of elevation of a cloud from a point h metre above a lake is θ. The angle of depression of its reflection in the lake is 45°. The height of the cloud is
In Δ BCD
d = H (∵ tan 45° = 1)
In Δ AED
H tan θ = H – h
h = H (1- tan θ)