Thread: Trigonometry problem

Hi all,

I was doing the problem attached, but cannot understand what is meant by E 70 S. Can someone please help me out. the Answer should be 13.57.

I also attached the sketch diagram.

Hey aritech.

For this problem E 70 S refers to a bearing which I think is east 70 south, or in translation a bearing of 70 degrees from either the south or east axis in either clock-wise or counter-clockwise direction.

However, the diagram doesn't indicate that either of the above are correct.

Hi chiro, the diagram attached is sketched be me, so it can be incorrect. I searched on the net for bearings and i found the picture attached. The E 70 S is most probably referring to the angle between 90 and 60. But still, i don't know which is the angle of descent which will result to 13.57.

Any help please?

first sighting ...

distance from the airport,

second sighting ...

distance from the airport,


distance traveled parallel to the earth's surface,


descent angle

speed


next time, DON'T BUMP.

Thanks fro the reply

Hi again, I cannot understand the working 100%, so I sketched a new diagram. Is the angle of descent the one marked with the green ?? and where in the diagram is E 70 S please?

Thanks in advance.

the descent angle is relative to the horizontal. it is formed by the change in altitude, 8000 - 5500 = 2500 m, over the distance traveled parallel to the earth's surface, 10068 m.