Question

$\sf\underbrace{༒ Bʀᴀɪɴʟʏ Sᴛᴀʀs}\\ \\ \sf \underbrace{༒Mᴏᴅᴇʀᴀᴛᴇʀs}\\ \\ \sf \underbrace{༒Other best user}$

$\begin{gathered}\sf \: if \: \frac{x}{y} = \frac{cosA}{cosB} \: then \: \frac{xTanA + xTanB}{x + y} is \: equal \: to \: \\ \\ \end{gathered}$
$\sf◆ \: tan \bigg( \frac{a + b}{2} \bigg) \\ \\ \sf◆Cot (A+B)\\ \\ \sf◆Tan(A+B)\\ \\ \sf◆Cot \frac {A+B}{2}$
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Answer 1

Answer is

cot(a + b)

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Answer 2

Step-by-step explanation:

ANSWER...☑

B) Tan(A+B) /2

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