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"Oh, I've seen those words," Cub answered, with some of his alleged characteristic "highbrow eagerness". "You spell sine, s-i-n-e, and cosine, c-o-s-i-n-e." "Exactly," smiled Mr. Perry. "Those are terms used in higher mathematics. But, in order that you youthful minds may not work too hard over my trick, I'll admit that in my mind I spelled sine s-i-g-n, and cosine, c-o-s-i-g-n."
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