[填空题]
From a sailboat moored at sea, the angle of ele ig49tayt )5ea,zl bwu t0(gmv;bx8mf3ic:* xvation to the top of a 20 m high037jc4jfhik ( /wg 6ahmnrd6 f cliff/wffhd4jim 0a(hjg 7 r6k6c3n is $22^{\circ}$. On the cliff top there is a coconut tree. The angle of elevation to the coconut tree is $29^{\circ}$.
1.Draw a diagram representing the situation.
2.Find the height of the coconut tree. m
