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किसी टॉवर के पास से 20 मी ।. दूर स्थित बिंदु से टॉवर के उच्च बिंदु का उन्नयन कोंढ `30^@` है । टावर की ऊंचाई ज्ञात करे ।

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किसी टॉवर के पास से 20 मी ।. दूर स्थित बिंदु से टॉवर के उच्च बिंदु का उन्नयन कोंढ `30^@` है । टावर की ऊंचाई ज्ञात करे ।
A. `10sqrt3`
B. `20sqrt3` m
C. `10/sqrt3` m
D. `20/sqrt3` m
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Correct Answer - D
image
AB=Tower
In `triangleABC`
`tan30^@=(AB)/(BC)`
`1/sqrt3=(AB)/20implies(AB)=20/sqrt3`
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