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  • 28-07-2016
  • Mathematics
Answered

cos2x + sin2 x =______

Verified Answer :

Panoyin
Panoyin Panoyin
  • 28-07-2016

cos²(x) + sin²(x)
¹/₂[1 - cos(2x)] + ¹/₂[1 + cos(2x)]
[¹/₂ - ¹/₂cos(2x)] + [¹/₂ + ¹/₂cos(2x)]
¹/₂ + ¹/₂ - ¹/₂cos(2x) + ¹/₂cos(2x)
1

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