
三角函數公式測驗
Authored by 吳宛真 吳宛真
Mathematics
9th Grade

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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
sin(α+β)等於sin α cos β加cos α sin β的公式是?
cos α sin β
sin α cos β加cos α sin β
cos α cos β
sin α sin β
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
sin(α-β)等於sin α cos β減cos α sin β的公式是?
sin α sin β
cos α cos β
cos α sin β
sin α cos β加cos α sin β
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
tan(α+β)等於1減tan α tan β分之tan α加tan β的公式是?
1減tan α tan β分之tan α加tan β
tan α tan β
1加tan α tan β分之tan α減tan β
tan α加tan β
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
sin 15度等於多少?
4分之根號6加根號2
4分之根號6減根號2
根號2分之1乘以2分之根號3
根號2分之1乘以2分1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
sin(α-β)等於sin α cos β減cos α sin β的公式中,負角關係sin(-θ)等於?
-cos θ
cos θ
sin θ
-sin θ
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
tan(α-β)等於1加tan α tan β分之tan α減tan β的公式中,1加tan α tan β分之tan α減tan β等於?
1加tan α tan β分之tan α減tan β
tan α加tan β
tan α tan β
1減tan α tan β分之tan α加tan β
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
sin(α+β)等於sin α cos β加cos α sin β的公式中,cos(90度-α)等於?
cos(90度-α)
sin(90度-α)
cos α
sin α
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