1103021412

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