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vikash sangwan

· started a discussion

· 1 Months ago

solution (Question: 188623.0 )

its ans can be B,

Question:
From the top and bottom of a tower, the angles of elevation of the peak of a mountain are \(\alpha\) and \(\beta\) respectively. If the height of the tower is h feet, then the height of the mountain is–
Options:
A) \(\cfrac{h\ tan\ \alpha}{tan\ \beta-tan\ \alpha}\)
B) \(\cfrac{h\ cot\ \alpha}{cot\ \beta-cot\ \alpha}\)
C) \(\cfrac{h\ tan\ \beta}{tan\ \beta-tan\ \alpha}\)
D) \(\cfrac{h\ cot\ \beta}{cot\ \alpha-cot\ \beta}\)
Solution:

Ans: (C)



Knowledge Expert

· commented

· 1 Months ago

No, you can not simplify it to option(b)
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