- Choice E$$\angle B=90°$$ $$\angle A+\angle B+\angle C=180°$$ $$\Rightarrow \angle A+\angle C=90°$$ $$\because \angle A\gt 43°$$ $$90-43=47$$ $$\therefore \angle C \lt 47°$$
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- Choice E$$\angle B=90°$$ $$\angle A+\angle B+\angle C=180°$$ $$\Rightarrow \angle A+\angle C=90°$$ $$\because \angle A\gt 43°$$ $$90-43=47$$ $$\therefore \angle C \lt 47°$$
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