sin (a - b) . If tana =m tan ß , th...
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sin (a - b) . If tana =m tan ß , then sin (a +B) n(a +B) = ?

Defence Exams
Maths
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( m tan beta ) ( tan alpha=m tan beta=m cos x sin beta ) ( operatorname{sen} alpha cos beta= ) ( Rightarrow ) ( Rightarrow quad sin alpha cos beta=m ) ( begin{aligned} & cos alpha sin beta Rightarrow & frac{sin x cos beta+cos alpha sin beta}{sin alpha cos beta-cos x sin beta}=frac{m+1}{m-1} quadleft(begin{array}{c}text { Use compendo } text { dividendo } )end{array}right.end{aligned} ) ( Rightarrow frac{sin (alpha+beta)}{sin (alpha-beta)}=frac{m+1}{m-1} ) ( Rightarrow quad frac{sin (alpha-beta)}{sin (alpha+beta)}=frac{m-1}{m+1} )
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