The length of the shadow of a pole on level ground increase 90m, when the angle of elevation of the sum changes from 58-38.calcu

Question

Dvinal [7]

4 years ago

7

The length of the shadow of a pole on level ground increase 90m, when the angle of elevation of the sum changes from 58-38.calcu

late the height of the pole, correct to 3sf

Mathematics

1 answer:

bazaltina [42] · Answer 1 · 2021-11-05T13:13:47+03:00

Answer: h = 137.4 metres

Step-by-step explanation:

Given that the length of the shadow of a pole on level ground increase 90m, that is, (x + 90)m will be the total length of the shadow. Also we are given that the angle of elevation of the sum changes from 58-38.

To calculate the height, we will employ trigonometry ratio. SohCahToa which are: tan 58 and tan 38.

Please find the attached files for the solution