Question

x = ____ unitsRound your answer to the nearest tenth of a degree.

Answer 1

To find x, we will use the Pythagoras theorem;

opposite² + adjacent² = hypotenuse²

x² + 12² = 20²

x² + 144 =400

subtract 144 from both-side of the equation

x² = 400 - 144

x² =256

Take the square root of both-side

x = 16