A) \[\text{2}\left( \text{1}+\text{cosA} \right)\left( \text{1}-\text{cosA} \right)\]
B) \[\text{2}\left( \text{l}-\text{sinA} \right)\left( \text{l}+\text{cosA} \right)\]
C) \[\text{2}\left( \text{l}+\text{sinA} \right)\left( \text{l}-\text{sin A} \right)\]
D) \[\text{2}\left( \text{l}+\text{sinA} \right)\left( \text{l}-\text{cosA} \right)\]
Correct Answer: B
Solution :
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