Question

If the the adj side of a triangle is x and the opp side is 9cm and the hyp is 2x what is the value of x?

Answer 1

Answer:

$x = 3\sqrt{3}$

Step-by-step explanation:

Let's use the Pythagorean theorem

$x^{2} + 9^{2} = (2x)^{2} \\x^{2} + 81 = 4x^{2} \\3x^{2} = 81\\x^{2} = 27\\x = \sqrt{27} = 3\sqrt{3}$