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Grade: 11 
        
SIN PI /14 X SIN 3 PI / 14 X  SIN5PI/14 X  SIN7PI/14 X SIN9 PI/14 X SIN 11PI /14 X SIN 13PI/14=_________________​​
    	
  1. 1/8
    2. 	
  2. 1/16
    3. 	
  3. 1/32
    4. 	
  4. 1/64
PLZZ GIVE SMALL SOLN ACCORDING TO JEE
 
one year ago

Answers : (1)

Saurabh Koranglekar
askIITians Faculty
1458 Points 
							combine first and last term then 2ndand 2ndlast term and so on and use sin(A)* sin(B) = (0.5)*((cos A+B)-cos(A-B))
3 months ago
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  • Test paper with Video Solution
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  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


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