Tan is short for tangent. Here we tell you what tan 19 degrees is, how we came up with the answer, and how knowing tan of 19 degrees can be useful.
To calculate tan (19) degrees of a right angled triangle, we use the following equation where angle is 19:
Tan(angle) = Opposite/Adjacent
Tan 19 degrees is simply the ratio of the side opposite of the angle to the side adjacent to the angle. As long as the angle stays at 19 degrees, the ratio does not change and tan 19 degrees is a fixed number. See figure 1 for a better illustration. The answer to "What is tan 19 degrees?" is as follows:
Tan(19 deg) ≈ 0.34432761329
Now you also know that the following is true:
0.34432761329 ≈ Opposite/Adjacent
This is useful because if you know either Opposite or Adjacent length, you can enter it in the equation above and solve for the missing length.
You can also re-write the equation above to solve for Opposite and Adjacent to get the following new equations:
Opposite ≈ 0.34432761329 x Adjacent
Adjacent ≈ Opposite / 0.34432761329
Tan of the angle in the illustration above is calculated by dividing the length of the Opposite by the length of the Adjacent.
If the angle is 19, then the tan of 19 degrees will be 0.34432761329.
To find tan of another number, please enter the number below and press "Calculate Tan".
What is Tan 20 degrees?
Go here for the next angle we converted.