Question : What is the value of $\frac{\sin (A+B)}{\sin A \cos B}$?
Option 1: $1 + \cot A \tan B$
Option 2: $1 + \tan A \cot B$
Option 3: $1 – \sin A \cos B$
Option 4: $1 − \cot A \tan B$
Answer (1)
18th Jan, 2024
Correct Answer: $1 + \cot A \tan B$
Solution :
$\frac{\sin (A+B)}{\sin A \cos B}$
= $\frac{\sin A \cos B + \cos A \sin B}{\sin A \cos B}$
= $1+ \cot A \tan B$
Hence, the correct answer is $1+ \cot A \tan B$.
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