Trigonometryhard · Past Paper
The angle of elevation of the top of a tower from a point is α. On moving distance 'a' towards it, it is 45 and 'b' more, it is 90-α. Height?
A√(ab)
B(a+b)
Ca-b
DNone
✓ Correct Answer: A — √(ab)
By geometry of complementary angles and given distances, the height h satisfies h² = ab.
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