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OP is a tower of height 20 m and AB is a pole of height 5 m. The angle of elevation of the top P of the tower from the top B of the pole is 45^(@). Both pole and tower stand on the same ground. The angle of elevation of the top P of the tower from the base A of the pole is |
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Answer» `"cos"^(-1) (3)/(5)` |
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