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55. The length of the shadow of a towerstanding on level ground is found to be2x m longer when the Sun's altitude is 30°than when it was 45°. Prove that the height |
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Answer» Step-by-step EXPLANATION: LET H be the HEIGHT of the tower. In ΔABC, BCAB=tan45∘ yh=1 h=y In ΔABD, BDAB=tan30∘ 2x+yh=31 2x+y=3h 2x+h=3h h=3−12x h=(3+1)XMETERS |
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