I need help pls
Finding coordinates Y and Z

Use the graph of the sine function y=2sinθ shown below

How many $20 bills do you need to have to make $280

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?