Use a Sum or Difference Identity to Find the Exact $\frac { \tan 20 ^ { \circ } + \tan 10 ^ { \circ } } { 1 - \tan 20 ^ { \circ } \tan 10 ^ { \circ } }$

question 230

Multiple Choice

Use a sum or difference identity to find the exact value.
- $\frac { \tan 20 ^ { \circ } + \tan 10 ^ { \circ } } { 1 - \tan 20 ^ { \circ } \tan 10 ^ { \circ } }$

• A) 2
• B) \(\frac { \sqrt { 3 } } { 3 }\)
• C) \(\sqrt { 3 }\)
• D) \(\frac { 1 } { 2 }\)

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