math (opt) math 2

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.

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

    so, if the height is h,

    h/50 = tan30°

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

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  3. Am i dead?

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  4. Maths teacher

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