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Without Using a Calculator, Give the Exact Trigonometric Function Value sec⁡45∘\sec 45 ^ { \circ }

Question 280

Multiple Choice

Without using a calculator, give the exact trigonometric function value with rational denominator.
- sec⁡45∘\sec 45 ^ { \circ }


A) 2\sqrt { 2 }
B) 12\frac { 1 } { 2 }
C) 1
D) 233\frac { 2 \sqrt { 3 } } { 3 }

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