Question

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

A.tan20 = x/10
B.tan10 = 20/x

Answer 1

\[\tan \theta = Opp/Adj\]

Answer 2

Does it make sense to find the tangent of 10? No, because 10 is not an angle it is a length. Does this help?
So finding the tangent of the angle that measures 20 degrees we use any ratio that would use the x (opposite to the angle) and the adjacent angle.
This is exactly A. tan20=opp/adj=x/10 :-)

Answer 3

Okay thank you!

Answer 4

You are welcome!