If the elevation of the sun changed from 30° to 60°, then the difference between the lengths of shadows of a pole 15 m high, made at these two positions is: 1. 7.5 m 2. 15 m 3. m 4. m

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Height of pole AB = 15 m Let D be the position where angle of elevation is 30° and C be the point where angle of elevation is 60°. In triangle ABC, We know that, In triangle ABD, We know that, From figure, CD = BD - BC CD = CD = Hence, option 4 is the correct option.

Mathematics

If the elevation of the sun changed from 30° to 60°, then the difference between the lengths of shadows of a pole 15 m high, made at these two positions is: 1. 7.5 m 2. 15 m 3. m 4. m

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