Respuesta :

the law of sines states stat the ratio of the sin of an angle to the side opposite of the points is equal for all angles/points/sides

so lets see what the 3 ratios are:
sin(R=100)/3.5
sin(S=?)/2.4
sin(Q=?)/?

so the first option is correct with
sin(100)/3.5=sin(S)/2.4

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