What is the component of a vector (in the plane) whose magnitude is 86.4 and whose component is 62.5?

Answer 1

This is like a right angled triangle with hypotenuse 86.4 and one side adjacent to the right angle 62.5.

Use the pythagorean theorem:

x^2 + 62.5^2 = 86.4^2

Solve for x.