Answer:
C) 56
Step-by-step explanation:
. What is the length of BC¯¯?
2. What is the length of AC¯¯?
3. What is the length of AD
well, since we know that there are 180° in π radians, how many degrees will it be in 345°?

The answer is B., based on the distributive property (multiply coeffictients, add exponents, change signs because of the negative number being multiplied)