Github:<br><a href="https://github.com/SorataKasugano" rel="nofollow" target="_blank">https://github.com/SorataKasugano</a>
IP屬地:山西
和角公式: 記住口訣:正余同余正,余余反正正同和反說的是符號,五個(gè)字分別對應(yīng)=號右邊 證明: ∠AOB = α障陶,∠AOP = β,|OP| = 1, 單位圓cos(α-β) ...