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急! 三角學13Q6
2012-06-22 2:18 am
回答 (1)
2012-06-22 6:54 am
✔ 最佳答案
(a) radius of wheel=r m=135/2 mrise of height of passenger capsule from P to Q
=y-coordinate of Q= rsin150°=(135/2)×(1/2)=135/4 m
(b) (i) vertical distance between R and S
=OS-|y-coordinate of R|=135/2-|-56|=23/2 m
(ii) y-coordinate of R=rsinθ=-56
(135/2)sinθ=-56=>sinθ=-112/135=>θ=236.06°
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原文連結 [永久失效]:
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