ABC ত্রিভুজের AB = 5 cm, BC = 6 cm এবং ত্রিভুজের ক্ষেত্রফল 12 cm² হলে ∠ABC =?

A \( \sin ^{-1} \frac{4}{5} \)

B \( \cos ^{-1} \frac{2}{5} \)

C \( \sin ^{-1} \frac{3}{4} \)

D \( \sin ^{-1} \frac{2}{5} \)

Solution

Correct Answer: Option A

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