Respuesta :

AL2006
Since this is definitely a RIGHT triangle (the little square in the corner),
the hypotenuse is 15, 'h' is the side opposite the 38-degree angle, and

      sin(38°)  =  h / 15

Multiply each side by 15:     h = 15 sin(38°)

                                                =  15 (0.616)

                                             h  =    9.235  
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Universidad de Mexico