
S5 10 三角學的應用
Authored by Wong Carmen
Mathematics
8th Grade

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11 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
請預備 1 支筆,1 張草稿紙,然後回答以下問題。
已預備
懶得預備
(後果自負)
2.
MATH RESPONSE QUESTION
1 min • 1 pt
圖中,由 O 測 P 的方位為 S86oE,且由 O 測 Q 的方位為 N32oE。求 ∠QOP。(不用輸入單位)
In the figure, the bearing of P from O is S86oE and the bearing of Q from O is N32oE. Find ∠QOP. (不用輸入單位)
Mathematical Equivalence
ON
Answer explanation
3.
MATH RESPONSE QUESTION
1 min • 1 pt
圖中,由 O 測 P 的方位為 S86oE,且由 O 測 Q 的方位為 N32oE。若 P 及 Q 與 O 等距,求 ∠OQP。(不用輸入單位)
In the figure, the bearing of P from O is S86oE and the bearing of Q from O is N32oE. Find ∠QOP. If P and Q are equidistant from O, find ∠OQP. (不用輸入單位)
Mathematical Equivalence
ON
Answer explanation
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
圖中,由 O 測 P 的方位為 S86oE,且由 O 測 Q 的方位為 N32oE。若 P 及 Q 與 O 等距,則由 Q 測 P 的方位為
In the figure, the bearing of P from O is S86oE and the bearing of Q from O is N32oE. Find ∠QOP. If P and Q are equidistant from O, then the bearing of P from Q is
N24oW。
N27oW。
S24oE。
S27oE。
Answer explanation
正確答案:S27°E
(請耐心等候左邊影片解說)
5.
MATH RESPONSE QUESTION
3 mins • 3 pts
某船位於燈塔以西 50 km 。若該船沿 S60°E 方向移動,則該船與燈塔間的最短距離是 _____ km。
A ship is 50 km due west of a lighthouse. If the ship moves in the direction S60°E, then the shortest distance between the ship and the lighthouse is _____ km.
Mathematical Equivalence
ON
Answer explanation
正確答案:25 (km)
(請耐心等候左邊影片解說)
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
圖中,AD 為立於水平地面 BCD 上的鉛垂柱。哪一個角是 AB 與平面 ACD 間的交角?
In the figure, AD is a vertical pole standing on the horizontal ground BCD. Which is the angle between AB and the plane ACD?
∠ABD
∠ACD
∠BAD
∠CAD
Answer explanation
7.
MATH RESPONSE QUESTION
2 mins • 2 pts
圖中,AD 為立於水平地面 BCD 上的鉛垂柱。 若 AB=25m、AD=15m、BC=29m 及 CD=21m, 求 AB 與平面 ACD 間的交角準確至最接近的度。(不用輸入單位)
In the figure, AD is a vertical pole standing on the horizontal ground BCD. If AB=25m, AD=15m, BC=29m and CD=21m, find the angle between AB and the plane ACD correct to the nearest degree. (不用輸入單位)
Mathematical Equivalence
ON
Answer explanation
正確答案:53°
(請耐心等候左邊影片解說)
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