Question

I need help with this

Answer 1

So a good trick to remember with trig is "SOH CAH TOA"

Sine = Opposite/Hypotenuse

Cosine = Adjacent/Hypotenuse

Tangent = Opposite/Adjacent

For here, since we have the opposite side and are solving for the adjacent side, we are using tangent. Our equation will look like this: $\frac{tan(25)}{1}=\frac{10}{x}$

Firstly, cross multiply: $tan(25)*x=10$

Next, divide both sides by tan(25), and your answer will be x = 21.4.