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Grade: 11

                        

In a right angled triangle the hypotenuse is four times as long as the perpendicular drawn to it from the opposite vertex. One of the acute angle is a)15° b)30° c)45° d) none of these

4 years ago

Answers : (3)

uortoiei
2 Points
							
c is the answer euto erouh kjghuf oeifdhiv oasidjfh pofhr vjdfbf  uerhg iknf lfiisrn liedvnnv lrinjf fdsjkfj vdfkjns sdljnf lsdfof ilfeki
4 years ago
Vaibhavi
12 Points
							Sorry but I didn`t get the language plz explain it in english And explain it step by step............... ...............
						
4 years ago
Sakshi
42 Points
							So let the triangle of sides ab, bc and ac, where ac is the hypotenuse of side 4x and the opposite perpendicular side ab is x . Let the angle you needs to find is y.  Sin(y) = opposite / hypotenuse = x / 4x = 1/4 ............ y = sin^-1 ( 1/4 ) which is approximately equal to 75 and 15 . Since,  it`s an acuteness angle the answer is 15
						
4 years ago
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Course Features

  • 31 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


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