Answer and Explanation
Your Answer is
Correct Answer is J
Explanation
∠D=∠CBA/2=35°, ∠DCA is a right angle, so AC=12sin35°, choose J
Use the following information to answer questions 49–51.
The center of the circle shown below is at B, and the length of diameter AD is 12 cm. The measure of 
is 60°, and the measure of 
is 70°.
50. Triangle △ACD is a right triangle. Which of the following expressions represents the length, in centimeters, of AC ?