Write the Expression as the Sine, Cosine, or Tangent of an Angle

question 58

Multiple Choice

Write the expression as the sine, cosine, or tangent of an angle.
- $\frac { \tan ( \pi / 5 ) + \tan ( \pi / 3 ) } { 1 - \tan ( \pi / 5 ) \tan ( \pi / 3 ) }$

• A) \(\tan \left( \frac { 2 \pi } { 15 } \right)\)
• B) \(\tan \left( \frac { \pi } { 15 } \right)\)
• C) \(\tan \left( \frac { \pi } { 8 } \right)\)
• D) \(\tan \left( \frac { 8 \pi } { 15 } \right)\)

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