仰ぎょう角かく

noun

angle of elevation

Technical term used in geometry, surveying, and engineering for the upward angle from the horizontal.

• 仰ぎょう角かくが30度どのとき、物ぶっ体たいは最もっとも遠とおくまで飛とぶ。

  When the angle of elevation is 30 degrees, the object flies the farthest.