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felrose13  Feb 19, 2017
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sin (x)  = 0.8   = 4/5

 

Use the arcsin

 

arcsin (4/5)  = x  ≈  .927 = A   and  x  = pi – arcsin (4/5)  ≈ 2.214 = B

 

 

cool cool cool

CPhill  Feb 19, 2017

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