Answer:
3.00
Step-by-step explanation:
let us look at triangle BAD first. Since it give us a complete information. using the formula
sin 0 = opposite / hypotenuse
sin 0 = 2.8/5.5
sin 0 =0.5091
transfer the sin to the other side
angle 0 = 30.6 ° (angle BAD)
it is given angle DAC = angle BAD
so angle DAC also =30.6°
since CD is an opposite than we use the previous formula back
sin 0 = opposite / hypotenuse
sin 30.6 = CD / 5.8
CD = 2.95 or 3.00
