Question

Which of the following equations can be used to solve for x?

tan20=x/10

tan20=10/x

tan10=20/x

Answer 1

tan20 = x/10

Explanation:

Hope it helps.

Answer 2

A.
`\text{tan}(20^(\circ))=(x)/(10)`

Explanation:

We have been given a right triangle. We are asked to find the equation that can be used to solve for x.

We can see that x is opposite side of the 20 degree angle and side length of 10 units is adjacent side.

We know that tangent relates opposite side of right triangle to adjacent side.

`\text{tan}=\frac{\text{Opposite}}{\text{Adjacent}}`

`\text{tan}(20^(\circ))=(x)/(10)`

Therefore, our required equation is
`\text{tan}(20^(\circ))=(x)/(10)` and option A is the correct choice.