This might be the challenging step in this unit was to understand the word problems that are related with trigonometry. As I have jotted down notes when I was in class, we usually say shadows as the horizontal line of the triangle. And a set of stairs with a vertical rise of 13 m, which they indicate as the opposite side, is the 13 m where you should be writing on. There are many ways you can visualize when the word is set to be on the vertical, and on the hypotenuse. Such as string, or a ladder because you have to climb on it.

So how should I understand all of these with such basic knowledge?

It’s telling you what’s the length of the shadow, since you don’t know what the measurement it is. We can easily solve this with the tangent ratio to find the variable. When you use the degree at, the angle of the elevation – which is measured upwards from the horizontal line. For example, the person is looking at the top of the tower because it’s his object. You would want to divide your ratio to find the feet of your word problem in your example.

This is a good visual for me to understand that the angle of elevation and depression are the same thing because there are reflected back to each other.

A second example that I recently solved is the measurement of a circle that is applied to using the trigonometry ratios.

I have learned that when it is written as ABC the right angle, the middle letter is what indicated the 90 degree and such. We don’t know what’s AB the diameter, but we have been given with the other measurements. It’s best to label the sides, and we know that the adjacent belongs to the side where the degree is. We can use the sine ratio to solve what the variable would be. As this is a circle, its basic knowledge that we need our answer, rounded by the nearest tenth of the cementer, as the word problem had indicated to divide by two.

But the question is why do we need to divide by two is what I always wonder… the diameter is always double by the radius. The circumference is the perimeter that is given to the circle. And we have learned this in ninth grade, so we should be familiar by it.