Cracking the SAT Physics Subject Test

In this example, Cx = 13, Cy = 18, and vector C is the hypotenuse of the two.

a^2 + b^2 = c^2

132 + 182 = C^2

493 = C^2

Magnitude of C ≈ 22.2

You can use SOHCAHTOA to find Ax and Ay values. If A makes the angle θ with

the x-axis, then its x- and y-components are A cosθ and A sinθ, respectively (where
A is the magnitude of A).