Write the Function in Terms of Its Cofunction

question 47

Multiple Choice

Write the function in terms of its cofunction. Assume that any angle in which an unknown appears is an acute angle.
-cos 31.2°

• A)cos 148.8°
• B)sin 58.8°
• C)sec 148.8°
• D)sin 31.2°

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Definitions:

Arithmetic Mean

The sum of a collection of numbers divided by the count of numbers in the collection, often used as a measure of central tendency.

Investment

Allocation of resources, usually financial, in assets or projects expected to yield returns over time.

Chebysheff's Theorem

A statistical rule stating that for any dataset, regardless of distribution, a certain proportion of values will fall within a specified number of standard deviations from the mean.

Empirical Rule

A statistical rule stating that for a normal distribution, nearly all data will fall within three standard deviations of the mean.