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Make Sense? In Exercises $102-105$ , determine whether each statement makes sense or does not make sense, and explain your reasoning. I used a half-angle formula to find the exact value of $\cos 100^{\circ} .$
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Determine whether each statement makes sense or does not make sense, and explain your reasoning. I used a half-angle formula to find the exact value of $\cos 100^{\circ}$
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