Level:
Project ID:
1103021412
Source Problem:
Accepted:
1
Clonable:
1
Easy:
1
The figure shows a rectangular trapezium whose bases have lengths of \( 21\,\mathrm{cm} \) and \( 15\,\mathrm{cm} \), and the longer arm is \( 10\,\mathrm{cm} \) long. Calculate the sine of the smallest interior angle of the trapezium.
\( 0.8 \)
\( 0.6 \)
\( 53.13^{\circ} \)
\( 36.87^{\circ} \)