A model of a plane is made using a scale of 1 : 5. a) If the real length of the plane is 20 m, what is
the length of the model?
b) If the wings of the model are 1.2 m long, what is
the actual length of the wings on the plane?

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step-by-step explanation:

d = distance between moon and sun, which in this problem is the hypotenuse of a right triangle.  

the distance y is the side opposite to angle x in the right triangle.   use the definition of the sine function from basic trigonometry.

sin(x) = y/d ⇒

d = y/sin(x)

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80

false

step-by-step explanation: