Use the Cofunction Identities to Evaluate the Expression Below Without $\cos ^ { 2 } 50 ^ { \circ } + \cos ^ { 2 } 58 ^ { \circ } + \cos ^ { 2 } 40 ^ { \circ } + \cos ^ { 2 } 32 ^ { \circ }$

question 5

Multiple Choice

Use the cofunction identities to evaluate the expression below without the aid of a calculator. $\cos ^ { 2 } 50 ^ { \circ } + \cos ^ { 2 } 58 ^ { \circ } + \cos ^ { 2 } 40 ^ { \circ } + \cos ^ { 2 } 32 ^ { \circ }$

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

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