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question mark

Please solve thoroughly …..
the value of (1/2+cos9)(1/2+cos27)(1/2+cos81)(1/2+cos243)..
  1. ½
  2. ¼
  3. 1/16
  4. 1/32

Yashvir Singh , 8 Years ago
Grade 11
anser 0 Answers

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