Step-by-step explanation:

Answer:
D
Step-by-step explanation:
complementary sums until 90 degrees
90-13=77
Answer:
18
Step-by-step explanation:
wait check b4 you answer
Answer: in statistics deviation is the difference between the value of one number in a series of numbers and the average value of all numbers in the series ( i hope this helped)
Step-by-step explanation: