x সূক্ষ্মকোণ ও sinx = \( \frac{3}{5} \) হলে, cosx মান কত?

A \( \frac{5}{3} \)

B \( \frac{4}{3} \)

C \( \frac{5}{4} \)

D \( \frac{4}{5} \)

Solution

Correct Answer: Option D

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