1 .A surveyor standing 68 meters from the base of a building measures the angle to the top of the building and finds it to be 40. The surveyor then measures the angle to the top of the radio tower on the building and finds that it is 49. How tall is the radio tower?
A) 7.48 meters
B) 10.77 meters
C) 7.61 meters
D) 21.17 meters