Calculate height given two angles of elevation and one side.?

Ian

New member
Shari and Leo are standing 36m apart and facing each other. If Shari looks upward, the angle of elevation of a hot air balloon in the sky is pie/4 radians and from Leo the angle of elevation is pie/3 radians. Calculate the height of the hot air balloon from the ground.

Please show steps and anything I may need to consider, thanks!
Answer in the back of the book is 22.8M
 
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