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Let, the height of the post = AB = ‘h’ m From ΔACB, ∠ACB = 30° [∵ given] tan ∠ACB = perpendicular/base ⇒ tan 30° = AB/BC ⇒ 1/√3 = h/BC ⇒ BC = h√3 ... (1) From ΔADB, ∠ADB = 60° [∵ given] tan ∠ADB = perpendicular/base ⇒ tan 60° = AB/BD ⇒ √3 = h/BD ⇒ BD = h/√3 ... (2) According to the question: BC - BD = 5 ⇒ h√3 - h/√3 = 5 ⇒ 2h/√3 = 5 ⇒ h = (5√3)/2 m
Consider the following peaks:
1. Saramati
2. Nokrek
3. Makalu
4. Annapurna
5. Kamet
6. Nanda Devi...
Consider the following pairs:
Hills Region
1. Cardamom Hills Coromandel Coast
...
When does lunar eclipse occur?
The Nilgiri Mountain Railway connects which two towns in Tamil Nadu?
Consider the following rivers:
1. Vamsadhara
2. Indravati
3. Pranahita
4. Pennar
Which of the above are tributaries of Godavari?
In the context of the drainage system of river Sutlej, which of the following statement is correct?
With reference to river Teesta, consider the following statements:
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How many Indian states share land boundaries with Nepal?
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These forests provide commercially viable wood like Teak. Th ey are marked by high degree of gregariousness. Amla and sandalwood are also found in these...