Question
The angle of depression from the top of a light-house
of two boats are 60° and 30° towards the west, if the two boats are 60m apart, then the height of the light house isSolution
D = h (cotA - cotB) Here (h = height of light house) D = AB = 60 60 = h (cot30° - cot60°) 60 = h (√3-1/√3) 60 = h ((3-1)/√3) 2h/√3 = 60 m     h = 60 × √3/2 = 30√3 m So height of the tower is = 30√3 m
Read the given sentence to find out whether there are any grammatical/ contextual errors in them. The errors, if any, will be in two of the pa...
Read each sentence to find out whether there is any grammatical error in it. The error, if any, will be in one part of the sentence. Mark the part with...
This is a water body created with the fresh water that cascades from the top of the mountains meeting the briny sea water on its banks.Â
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He was one of those fortunate slave who worked for a humane master, Â as a coachman and house servant.
Interchange the words in the two sentences so that both the sentences become grammatically and contextually correct.
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Rising global temperatures have led to the accelerated melting of polar ice caps, contributing to sea-level arise.
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