Simplify
\[\frac{\sin{10^\circ}+\sin{20^\circ}}{\cos{10^\circ}+\cos{20^\circ}}.\]Enter your answer is a trigonometric function evaluated at an integer, such as "sin 7".  (The angle should be positive and as small as possible.)
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Simplify
\[\frac{\sin{10^\circ}+\sin{20^\circ}}{\cos{10^\circ}+\cos{20^\circ}}.\]Enter your answer is a trigonometric function evaluated at an integer, such as "sin 7".  (The angle should be positive and as small as possible.)
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
\tan 15^\circ
Simplify
\[\frac{\sin{10^\circ}+\sin{20^\circ}}{\cos{10^\circ}+\cos{20^\circ}}.\]Enter your answer is a trigonometric function evaluated at an integer, such as "sin 7".  (The angle should be positive and as small as possible.)
train