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In ∆ABC, AB = 21 inches, BC = 25 feet. What would be ∠ACB in degrees (up to two decimal points)?

A.
4.56 degrees
B.
3.43 degrees
C.
4 degrees
D.
5.25 degrees

Respuesta :

sqdancefan

Answer:

  C.  4 degrees

Step-by-step explanation:

We have to assume that the triangle is a right triangle with the right angle at B. Then, the given dimensions are the side opposite and the side adjacent to the angle. So, we have ...

  Tan = Opposite/Adjacent

  tan(C) = (21 in)/(300 in) = 0.07

  ∠C = arctan(0.07)

  ∠C ≈ 4.00°

C.... 4 degrees

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