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True or false: If b is between -1 and 1, then cos(arccos(b)) always equals b

Deathstroke_rule Apr 19, 2017

Best Answer 

  #1
avatar +3375 
+2

True!

 

(-1 and +1 included) smiley

hectictar Apr 19, 2017
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1+0 Answers

  #1
avatar +3375 
+2
Best Answer

True!

 

(-1 and +1 included) smiley

hectictar Apr 19, 2017

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