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For the problem below, use the Pythagorean Identity.

 May 21, 2019
 #1
avatar+32709 
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deleted

 

Yah!    See CPhill's comment below....

 May 21, 2019
edited by Guest  May 21, 2019
 #2
avatar+120023 
+3

GM....the cosine cannot  be  4  / sqrt (11)

 

The max value for the cosine  = 1....but  4 /sqrt (11)   ≈  1.206.....and this isn't possible

 

 

cool cool cool

 May 21, 2019

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