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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=_________________ ​ ​ 1/8 1/16 1/32 1/64 PLZZ GIVE SMALL SOLN ACCORDING TO JEE

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. 1/16
  3. 1/32
  4. 1/64
PLZZ GIVE SMALL SOLN ACCORDING TO JEE
 

Grade:11

1 Answers

Saurabh Koranglekar
askIITians Faculty 10341 Points
3 years ago
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))

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