Page 119 - Math SL HB Sem 1
P. 119
CIRCULAR I,-UNCT TONS ANt) I'ttlGONOMFt.I.Ry
Example 4: From a point A, I observe that the angle of elevation of the tof
of a tree is 2l ". Iwalk I0mtowards the foot ofthe tree to a
t?,lt I: from where the angle of elevation of the top of the tree is
34 " . Calculate the height ofthe tree above the level
of observation.
4-44
