S 6
6
70-
70
A
B
R
7
Using the figure above, If AB = RT and ZR = 70°, then
O A ABC ARTS
m 2 S= 60°
Om S=50
O A ABC ARTS

The telegraph, the transatlantic telegraph cable, and the telephone were important to businesses after 1850 because of a. they created a system for developing new inventions. b. they filled a need that other inventions of the day could not. c. they attracted investors and created the stock market. d. they made picture-taking a popular american pastime.