Answer: 42.21 km
Step-by-step explanation:
We can solve this using trigonometry, since we have the following data:
is the the angle of elevation
is the horizontal distance between the plane and the radar station
is the hypotenuse of the right triangle formed between the radar station and the airplane
Now, the trigonometric function that will be used is <u>cosine</u>:
because
is the adjacent side of the right triangle
Finding
:
Answer: 15
Step-by-step explanation:
If two points are together, then you subtract the numbers to get the distance
19 - 4 = 15
Answer:
it will take 25 hours
Step-by-step explanation: add 10 and 15
The first blank should be -5. The second should be -10. The third one should 10, if it’s talking about the opposite of -10.
Answer:
True
Step-by-step explanation:
The nature of roots of a quadratic equation are determined by

where a, b, and c are the coefficients of the quadratic equation

Therefore it is true that, the roots of a quadratic equation depend on the values of the coefficients.