Question
From an external point P, a tangent PT is drawn to a
circle with centre O. If OP = 17 cm and PT = 15 cm, then the radius of the circle is:Solution
ATQ, Radius is perpendicular to tangent at the point of contact. So in right triangle OPT: OP2 = OT2 + PT2 172 = r2 + 152 289 = r2 + 225 r2 = 64 r = 8 cm
Which one of the following statements for a tropographical map is not correct?
A, B, C, D and E are standing in row. 'A' is between 'B' and 'D'. E is not at the starting of row. 'C' is just before D.Â
Study above statement ...
The square of the sum of two numbers equals the square of the difference between them. Which of the following has to be true?
Match List I with List II
...
The Agasthyamalai Biosphere reserve is in:Â
Which organization published the Human Development Index (HDI) Report?
Which amongst the following was not correct about the ancient town of Mathura ?
Lightning is seen before thunder because
Which amongst the following statements is/are not correct ?
1.     Isthmus is a narrow strip of land joining two landmasses.
2. �...
Which one of the following is the correct sequence in the decreasing order of contribution of different sources to the gross domestic product (GDP) in I...
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