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TVET CHNS,Eng,Maths
Senior High
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請問這題怎麼算🙏

92 (B) 12. Elsino +cos A = 1 sin (90°- 0) = cos ou ☆ (sin 23º- sin 67°) +(sin 23° +sin 670) = (A)1 (B)2 (C)3 (0)4 RU
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