When a function is compose by its inverse, the result is its original input. Therefore,
A. 2x3=6 and 6x12=72 so 78 is greater than 36
6+72=79 which is less than 90
4th one. its simple math bro
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
: