Explanation: First, let's consider the smaller triangle.: It is a right-angled triangle, therefore, we can use the special trig functions. tan θ = opposite / adjacent tan 45 = opposite / 5 opposite = 5
Now, for the larger triangle: It is also a right angled triangle which means that we can use the special trig functions. sin θ = opposite / hypotenuse sin (30) = 5 / x x = 10 units