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Ladies I require assistance. It is big sad

 Nov 2, 2020
 #1
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Use law of sines

 

4 is to sin 45   as   XY is to sin 60

 

4/sin45   =   XY/sin60      solve for XY

 Nov 2, 2020
 #2
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By the Sine Law, YZ = 6*sqrt(2).

 Nov 2, 2020

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