Solve sin(x-a)/sin(x+a)
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sin(x-a)/sin(x+a)
wkt,
sin=opp/hyp
opp/hyp(x-a)/opp/hyp(x+a)
=opp/hyp(x-a)×hyp/opp(x+a)
=(x-a) (x+a)
wkt,
sin=opp/hyp
opp/hyp(x-a)/opp/hyp(x+a)
=opp/hyp(x-a)×hyp/opp(x+a)
=(x-a) (x+a)
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