10. For the triangle shown, which of the following would allow you to calculate the angle of elevation?

26 cm

9 cm

C. tan @= 26 9

d. tan 9º = 26 run

a. tan 26° = rise

b. tan @= 9 26

The correct answer is b. tan @= 9/26. This allows you to calculate the angle of elevation using the tangent function, with the opposite side (9 cm) divided by the adjacent side (26 cm).

To calculate the angle of elevation in the given triangle, you can use the trigonometric function tangent (tan). The correct option would be:

a. tan 26° = rise

Using this option, you can calculate the angle of elevation by taking the inverse tangent (arctan) of the value of "rise" that you have.

To calculate the angle of elevation in a right triangle, we can use the tangent function, which is defined as the ratio of the length of the side opposite the angle to the length of the side adjacent to the angle.

Looking at the given options, only one of them follows this format correctly:

b. tan θ = 9/26

Here, "θ" represents the angle of elevation, "9" is the length of the side opposite the angle (the height or rise in this case), and "26" is the length of the side adjacent to the angle (the distance or run in this case).

Therefore, the correct option to calculate the angle of elevation is:

b. tan θ = 9/26.