Use a Sum or Difference Identity to Find the Exact $$\frac { \tan 65 ^ { \circ } + \tan 85 ^ { \circ } } { 1 - \tan 65 ^ { \circ } \tan 85 ^ { \circ } }$$

question 94

Multiple Choice

Use a sum or difference identity to find the exact value.
- $$\frac { \tan 65 ^ { \circ } + \tan 85 ^ { \circ } } { 1 - \tan 65 ^ { \circ } \tan 85 ^ { \circ } }$$

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

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Definitions:

Genotype

The genetic makeup of an organism, representing the combination of alleles inherited from its parents.

Phenotype

The assortment of detectable features in an individual, formed through the combination of their genetic material and the influence of environmental conditions.

Genotype Frequencies

The proportion of different genetic types within a population.

Phenotype Frequencies

The proportion of various phenotypes in a given population, often impacted by genetic and environmental factors.