# In the given figure, a tower AB is 20 m high and BC, its shadow on the ground is 20√3 m long. The sun's altitude isA. 30°B. 45°C. 60°D. none of these

Given, AB = 20 m, its shadow BC = 20√3 m. We have to find ACB.

So,

ACB = 30°

The correct choice is A.

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