Question 389695
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Hi,  
<img src=" http://upload.wikimedia.org/wikipedia/commons/thumb/6/6f/Rtriangle.svg/200px-Rtriangle.svg.png ">

sinA= 3/5 and C=17
Finding a and b
sinA = opp/hyp = a/c = 3/5 =  3*3.4/5*3.4 = 10.2/17
  a = 10.2
Applying Pythagoream Theorem a^2 + b^2 = c^2
{{{b= sqrt(17^2 - 10.2^2)= highlight(13.6)}}}