NDA Math Trigonometric Ratios of Angles and Equations

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Question : 29 of 100
 
Marks: +1, -0
If ‌‌
sin(x+y)
sin(x−y)
=‌‌
a+b
a−b
, then what is ‌‌
tanx
tany
equal to ?
[NDA I 2018]
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