That's why you need to include the UNITS when you write down a problem. If 13 means 13º, the BC = 27.3 cm. If 13 means 13 radians, then BC = 25.4 cm.
Check your problem statement and your calculator setting.
I am familiar with the sine law(rule) but i've been to a few websites that seem to have the wrong answers.
A question states find the size of BC given that AB=14cm angle BAC=26 and angle ACB=13.
They have BC=27.3cm
I have BC=25.4cm
I'm just making sure I'm right.