Level:
Project ID:
1103021801
Source Problem:
Accepted:
1
Clonable:
1
Easy:
0
Given a right-angled triangle \( ABC \) with the right angle at vertex \( C \), calculate \( \sin\beta \) if \(\cos\alpha=\frac5{13} \).
\( \frac5{13} \)
\( \frac{13}5 \)
\( \frac{12}{13} \)
\( \frac5{12} \)