Use an Identity to Write the Expression as a Single $\sin 22.5 ^ { \circ } \cos 22.5 ^ { \circ }$

question 34

Multiple Choice

Use an identity to write the expression as a single trigonometric function or as a single number.
- $\sin 22.5 ^ { \circ } \cos 22.5 ^ { \circ }$

• A) \(\frac { \sqrt { 3 } } { 3 }\)
• B) \(\frac { \sqrt { 2 } } { 2 }\)
• C) \(\frac { \sqrt { 2 } } { 4 }\)
• D) \(\sqrt { 3 }\)

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Definitions:

Variable Selling Expenses

Costs that fluctuate with the level of sales activity, such as commissions and shipping fees.

Contribution Margin

The amount remaining from sales revenue after variable expenses are subtracted, used to cover fixed costs and generate profit.

Variable Administrative Expenses

Costs that change in proportion to the activity of a business.

Incremental Manufacturing Cost

The additional cost incurred to produce an additional unit of a product.