Use the Formula for the Cosine of the Difference of Two

question 7

Multiple Choice

Use the Formula for the Cosine of the Difference of Two Angles
- $\cos \left( 155 ^ { \circ } \right) \cos \left( 35 ^ { \circ } \right) + \sin \left( 155 ^ { \circ } \right) \sin \left( 35 ^ { \circ } \right)$

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

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Definitions:

Competitive Exclusion

A principle stating that two species competing for the same resource cannot coexist at constant population values, if other ecological factors remain constant.

Interspecific Competition

A form of competition between individuals of different species competing for the same resource in an ecosystem.

Intraspecific Competition

A situation in ecology where individuals of the same species compete for the same resources in an ecosystem, such as food, space, or mates.

Character Displacement

The tendency for two similar species to diverge (become more different) in areas where their ranges overlap; reduces interspecific competition.