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ฟังก์ชันตรีโกณมิติของผลบวกและผลต่างของจำนวนจริงหรือมุม

Authored by RAWISSADA DUANGJUNTA

Mathematics

10th - 12th Grade

Used 121+ times

ฟังก์ชันตรีโกณมิติของผลบวกและผลต่างของจำนวนจริงหรือมุม
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5 questions

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1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 sin(π2B) \sin\left(\frac{\pi}{2}-B\right)\ ตรงกับข้อใด  

cosB

sinA

sinB

cosA

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 cos(π2A)\cos\left(\frac{\pi}{2}-A\right)  มีค่าตรงกับข้อใด

sinB

cosB

sinA

cosB

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

cos15cos30-sin15sin30

12\frac{1}{2}

22\frac{\sqrt{2}}{2}

32\frac{\sqrt{3}}{2}

0

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 sinθ-\sin\theta  

 sin(π2θ)\sin\left(\frac{\pi}{2}-\theta\right)  

 sin(3π2θ)\sin\left(\frac{3\pi}{2}-\theta\right)  

 cos(3π2θ)\cos\left(\frac{3\pi}{2}-\theta\right)  

 sin(πθ)\sin\left(\pi-\theta\right)  

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 cos π5 sec π5\cos\ \frac{\pi}{5}\ \sec\ \frac{\pi}{5}  

0

1

 2\sqrt{2}  

2

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