三角函数
(sciences) diagram
brass
Alternative spelling of 三角関数
gravel / a magistrate's office for adjudicating issues from commoners (from the rock gardens that were common at these during the Edo period) / rice (either cooked or as raw grains)
He is good at solving problems of trigonometric functions.
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DiQt（ディクト）
無料
★★★★★★★★★★
