Use the diagram to derive the law of cosines.
which of the following statements is true?
b = c cos a
x = a cos c
c=h cos a
b/x=c/b

B) x= a cos C

Step-by-step explanation:

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.

the answer to this is a. a^2 + b^2 = c^2