Find the Exact Value of the Expression $$\frac { \tan 175 ^ { \circ } - \tan 55 ^ { \circ } } { 1 + \tan 175 ^ { \circ } \tan 55 ^ { \circ } }$$

question 198

Multiple Choice

Find the exact value of the expression.
- $$\frac { \tan 175 ^ { \circ } - \tan 55 ^ { \circ } } { 1 + \tan 175 ^ { \circ } \tan 55 ^ { \circ } }$$

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

---

Definitions:

Muscle Tension

The force generated by the contraction of muscles, important in movement, maintenance of posture, and the production of body heat.

Contraction

The process of a muscle becoming shorter and tighter, usually in response to a nerve impulse.

Isometric Contraction

Muscle contraction in which the length of the muscle does not change but the tension produced increases.

Action Potential

A temporary reversal of the electrical potential across the membrane of a nerve cell (neuron) that occurs when the cell generates a nerve impulse.