Step-by-step explanation:
Yes they are equivalent. You get -3 when you try solving the actual equation.
2x=3
so substitute y=mx+c
rise/run
Answer:
48°
Step-by-step explanation:
We can solve this using our knowledge on tangents of an angle. Remember, tangents are the opposite leg divided by the leg adjacent to that angle.
This means the tangent of x° =
. Now that we know the tangent ratio, we can find the angle with inverse trigonometric ratios. These kinds of ratios give us the opposite of the tangent - which would lead to the angle measure we're looking for. The equation would look like this:

Using a calculator, the answer would be:

Rounding this to the nearest degree would give us 48° as our answer! I hope this was clear enough.
Answer:
6.06 km
Step-by-step explanation:
The information given in the question can be represented by the three sides if a right angled triangle.
Let the direct line from the airplane to the start of the runway be represented by x. So that applying the appropriate trigonometric function, we have;
Cos θ = 
Cos
= 
0.9903 = 
⇒ x = 
= 6.0588
x = 6.06 km
The direct line from the airplane to the stat of the runway is 6.06 km.