In this population, suppose that immigration and emigration make the population size naturally variable between 2,000 and 14,000
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Answer:
see explanation
Step-by-step explanation:
Using the trigonometric identities
tan x = , sin²x + cos²x = 1
Consider the left side
= ← multiply numerator/ denominator of the whole fraction by cos²x
=
=
= cos²x - sin²x
= cos²x - (1 - cos²x)
= cos²x - 1 + cos²x
= 2cos²x - 1
= right side , thus proven