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

question 174

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

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The difference between sales revenue and the cost of goods sold, indicating the efficiency of a company in producing and selling its products.

Goodwill

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