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  • 24-05-2018
  • Mathematics
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sqdancefan
sqdancefan sqdancefan
  • 24-05-2018
3) tan(?) = 9/21
   ? = arctan(9/21)
   ? ≈ 23.20°

4) sine and cosine are equal for complementary angles.
   θ = 90° - 32°
   θ = 58°
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