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I am need help to solve. I am not understanding the step process.

I am need help to solve. I am not understanding the step process.-example-1

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We are given the following information

and told to find x. Recall that this is a right triangle, so to solve the problem we will use trigonometry. Recall that for a right triangle we have the following

For the given angle, its cosine is defined as follows


\cos (\text{angle)}=(a)/(c)

In our case we have a=x, c=18 and the angle is 12°. So we get


\cos (12)=(x)/(18)

By multiplying both sides by 18, we get


x=18\cdot\cos (12)

using a calculator, we get


x=18\cdot\cos (12)\approx16.607

So x is approximately 16.607 m

I am need help to solve. I am not understanding the step process.-example-1
I am need help to solve. I am not understanding the step process.-example-2
User Adriene
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