Use the Cofunction Identities to Evaluate the Expression Below Without $\frac { 1 } { 2 }$

question 36

Multiple Choice

Use the cofunction identities to evaluate the expression below without using calculator. sin²20° + sin²27° + sin²70° + sin²63°

• A)1
• B) \(\frac { 1 } { 2 }\)
• C)-1
• D)?0
• E)2

---

Definitions:

Depreciation

The accounting process of allocating the cost of a tangible asset over its useful life, reflecting the asset's consumption, wear and tear, or obsolescence.

Annual Depreciation

The amount of an asset's cost that is allocated as expense across one year of its useful life, reflecting the asset's loss of value over time.

Double-declining-balance Method

A method of accelerated depreciation which doubles the straight-line depreciation rate, applying it against the un-depreciated balance each year.

Depreciation Schedule

A table detailing the periodic depreciation expense for an asset over its useful life.