Use an Addition or Subtraction Formula to Write $\frac { \tan \frac { 2 \pi } { 15 } + \tan \frac { 6 \pi } { 5 } } { 1 - \tan \frac { 2 \pi } { 15 } \tan \frac { 6 \pi } { 5 } }$

question 43

Essay

Use an addition or subtraction formula to write $\frac { \tan \frac { 2 \pi } { 15 } + \tan \frac { 6 \pi } { 5 } } { 1 - \tan \frac { 2 \pi } { 15 } \tan \frac { 6 \pi } { 5 } }$ and find the exact value.

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Definitions:

Factory Overhead

All indirect costs incurred during the production of goods, such as utilities, depreciation, and salaries of maintenance employees.

Direct Materials

Basic substances used in the direct creation of particular products or services.

Lubricants

Substances introduced between surfaces to reduce friction and wear, often essential for the smooth operation of machinery.

Direct Cost

Expenditures that can be directly associated with manufacturing certain goods or services, like labor and raw materials.