question_answer

A boy is standing on the ground and flying a kite with 100 m of a string at an elevation of \[30{}^\circ \]. Another boy is standing on the roof of a 20 m high building and is flying his kite at an elevation of\[45{}^\circ \]. Both the boys are on the opposite sides of both the kites. Find the length of the string (correct the two places of decimal) that the second boy must have such that the two kites meet.

A)  32.37 m                      

B)  42.43 m

C)  47.49 m                      

D)  54.59 m

E)  None of these