a can complete a piece of work in 10 days B can do it in 12 days C can do it in 15 days in how many days will they finish the wo
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Answer:
$891
Step-by-step explanation:
This is Your Answer: $891, Steps below
Answer with Step-by-step explanation:
We are given that:
tanA = 0.45
tanA=
=
⇒ =0.45
⇒ =
⇒ =
⇒ AC= 20
Hence, by pythagoras theorem
AB²=AC²+BC²
AB²=20²+9²
AB²=481
⇒ AB=21.9 units
Hence, the approximate length of AB is:
22 units