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ວິຊາ ຄະນິດສາດ ( ພາກເລຂາຄະນິດ ) ຊັ້ນ ມ.4

Authored by Lunn Ali

Mathematics

KG

Used 2+ times

ວິຊາ ຄະນິດສາດ ( ພາກເລຂາຄະນິດ ) ຊັ້ນ ມ.4
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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

ຄ່າຂອງ A=2sin⁡45°−3cos⁡30°A=\sqrt[]{2}\sin45\degree-\sqrt[]{3}\cos30\degree   ເທົ່າກັບຂໍ້ໃດ ?

−12-\frac{1}{2}  

12\frac{1}{2}  

−32-\frac{3}{2}  

32\frac{3}{2}  

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

ຖ້າ 2sin⁡θ=32\sin\theta=\sqrt[]{3}  ແລະ 0°≤θ≤90°0\degree\le\theta\le90\degree  ແລ້ວ θ\theta   ມີຄ່າເທົ່າໃດ ?

30°30\degree  

45°45\degree  

60°60\degree  

90°90\degree  

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

ຖ້າຮູບສາມແຈ ABC ມີຂ້າງ BC=18,  ມຸມB=30° ແລະ ມຸມC=60°BC=18,\ \ ມຸມB=30\degree\ ແລະ\ ມຸມC=60\degree  ແລ້ວຂ້າງ AC ຍາວເທົ່າໃດ ?

7

8

9

10

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

ໃຫ້ຮູບສາມແຈສາກ ABC, ສາກຢູ່ A ທີ່ມີຂ້າງ a=2 ແລະ ມຸມ B ເທົ່າກັບ 30°30\degree  . ຈົ່ງຊອກຫາ ຄ່າຂອງ ມຸມ C ເທົ່າກັບເທົ່າໃດ ?

45°45\degree  

60°60\degree  

90°90\degree  

120°120\degree  

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

ລັດສະໝີຂອງວົງມົນແນບນອກຮູບສາມແຈ ABC ທີ່ມີມຸມ A ເທົ່າກັບ 45°45\degree   ແມ່ນ 525\sqrt[]{2}  . ຂ້າງ a ຍາວເທົ່າໃດ ?

5 cm

8 cm

10 cm

12 cm

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

ໃຫ້ຮູບສາມແຈ ABC ທີ່ມີຂ້າງ BC=3−1, AC=2BC=\sqrt[]{3}-1,\ AC=\sqrt[]{2}   ແລະ ມຸມ C ເທົ່າກັບ 120°120\degree  . ຈົ່ງຊອກຫາ AB

5\sqrt[]{5}  

6\sqrt[]{6}  

7\sqrt[]{7}  

8\sqrt[]{8}  

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

sin⁡180°−θ\sin180\degree-\theta   ເທົ່າກັບຂໍ້ໃດ ?

−cos⁡θ-\cos\theta  

sin⁡θ\sin\theta  

−sin⁡θ-\sin\theta  

cos⁡θ\cos\theta  

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