AC=2500⋅cos25°=2266mAC = 2500 \cdot \cos25° = 2266\text{m}AC=2500⋅cos25°=2266m Cの標高=2266⋅tan15°+100=707C \text{の標高} = 2266 \cdot \tan15° + 100 = 707Cの標高=2266⋅tan15°+100=707