Please help.

Complete the following questions utilizing the concepts introduced in this unit. 1. Find the length oi'an are in a circle of radius 10 centimeters subtended by the central angle of 50". Show your work. 2. Graph f{3_:) = 3: sin 5.: on [-4rr. 4n] and verbalize how the graph varies from the graphs off{a:) = ix. Graph f[_rg) = \"I: '5 on the window [-511. 511] and describe freely what the graph shows. You can use wwdesmoscomlcalculator to obtain the graphs. 3. A 23-ft ladder leans against a building so that the angle between the ground and the ladder is 80. How high does the ladder reach up the side ofthe building? Show the steps ofyour reasoning