Question

A flagstaff of placed at one corner of a rectangular playground 40m long and 30m wide. If the angle of elevation of the top of flag staff from the opposite corner of 30°, find height of the flagstaff.
(The question is complete and I have cross checked the question. )
I made a slanted ground so that I can make the flagstaff's height be clear. But this way I only see one triangle being formedd in the figure. I also drew a diagonal for the rectangle. Since rectangle is slanted so I took the angle of elevation from the opposite corner from the diagonal ( not from the ground's length)
Now I can't solve it. I am sure I have made a wrong figure.
Someone please help me how to draw the figure and how to solve.

Answer 1

If the sides are 30 and 40, the diagonal is 50

so, if the height is h,

h/50 = tan30°

Answer 2

Oh so u used Pythagoras theorem for the diagonal. Thank you

Answer 3

Am i dead?

Answer 4

Maths teacher