1. A(2, 10°) and B(4, 190°) are represented in polar coordinates. What is the distance beyween A and B ?
A. 2
B. 3
C. 4
D. 6
呢條題來自 Train Up MATHEMATICS 1 (S.1-S.2)
maths的英文mc
2007-07-27 11:40 pm
回答 (2)
2007-07-27 11:48 pm
✔ 最佳答案
d. 6A(10°) B(190°) 即表示兩者在同一條直線的兩極上, 而它們的距離是 2+4 = 6
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