Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 7 - No. 16)
If the height of a tower and the angle of elevation from a point on the ground to the top of the tower are known, what can be determined?
The length of the base of the tower.
The distance from the point on the ground to the top of the tower.
Both A and B
The area of the triangle.
설명
With the angle of elevation and height, you can find both the base distance and the distance to the top.