Answer:
Here,
We know that cosD= b/h
=21/75
=7/25
13.5
Step-by-step explanation:
4+5 = 9.
9/2 = 4.5
4.5 * 3 = 13.5
The answer is 2.1 Km. Hope this helps!
A right triangle is formed.
300 miles and 400 miles are the legs of the triangle.
We can apply Pythagorean theorem.