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Let the height of the building be h. D the man standing on the top of the building. Now, from figure, AB = x and BC = y tan 60⁰ = h/y h = y√3 And tan 30⁰ = h/(x+y) 1/√3 = (y√3)/(x+y) 3y = x+y 2y = x y = x/2 Since, Time taken to cover a distance from A to B = 8 minutes ∴ Time taken to cover a unit distance = 8/x minutes For distance ‘y’ time taken = 8/x × y = 8/x × x/2 = 4 minutes.
Choose the incorrectly spelt word.
No sooner did the bell rang than the students ran out of the class.
Select the word whose spelling is incorrect.
In the following sentence, four words or phrases have been highlighted. One of them is incorrect. Choose the INCORRECT word or phrase from the given opt...
In each question below, a sentence is given with a part of it printed in bold type. That part may contain a grammatical error. Each sentence is followe...
Mostly of us would have at least one outfit in our wardrobe that we don’t use.
...Select the word with the correct spelling.
Select the INCORRECTLY spelt word.
The book is full of updated and contemparary commentary.
Choose the word with the correct spelling.
