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Megan wanted to solve this problem, what did she do wrong?

 May 21, 2021
 #1
avatar+506 
0

D

There's a square root on the denominator of the solution.

multiply top and bottom by $\sqrt3$

 May 21, 2021
 #2
avatar+119811 
+1

The problem  is  in the  set -up

 

sin ^2  x   +   cos^2   x   =   1

 

But

 

(-sqrt (2)  / 2)^2    +   ( sqrt  (3)  / 2) ^2  =

 

         2/4     +  3/4      =     5/4 

 

 

  { The  sine  should   probably  be   -1/2   to  make  this work }    

 

cool cool cool            

 May 21, 2021

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