2. Angle Addition Postulate as they are adding both angles
3. 60 + 40 = m <ABC because it's a substitution
4. 100 = m <ABC as it is simplified already
5. Definition of obtuse angle
0.015 x 600 =9 so more than expected
Answer:
C. X= -2.01 and x= 1.67
Step-by-step explanation:
It would be helpful if a figure is drawn as you can see clearly the situation of the problem. We would see that a right triangle is made where the angle between the elevation of the airplane with respect to the ground is 7 degrees and the horizontal distance is the base of the triangle. We use trigonemetric functions.
tan 7 = opposite side / adjacent = height / 3729
height = 458 meters
