若θ與ϕ皆為銳角,且θ + ϕ = 90°,則sin2θ + cos2ϕ = 1。
單元10乙+單元11甲乙_小考

Quiz
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Mathematics
•
10th Grade
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Hard
縣立田中高中林佳慧 縣立田中高中林佳慧
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
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2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
sin240° + sin250° = 1。
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3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
若sinθ = ,θ為銳角,則cos(90° − θ ) = 。
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4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
。
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5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
,則sinθ = 3,cosθ = 4。
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6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
1500°的最小正同界角為60°。
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7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
對於任意廣義角ϕ,都能找到唯一的θ(0° ≤θ < 360°),使得θ為ϕ的同界角。
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