Tan is short for tangent. Here we tell you what tan 31 degrees is, how we came up with the answer, and how knowing tan of 31 degrees can be useful.
To calculate tan (31) degrees of a right angled triangle, we use the following equation where angle is 31:
Tan(angle) = Opposite/Adjacent
Tan 31 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 31 degrees, the ratio does not change and tan 31 degrees is a fixed number. See figure 1 for a better illustration. The answer to "What is tan 31 degrees?" is as follows:
Tan(31 deg) ≈ 0.600860619028
Now you also know that the following is true:
0.600860619028 ≈ 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 ≈ 0.600860619028 x Adjacent
Adjacent ≈ Opposite / 0.600860619028
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 31, then the tan of 31 degrees will be 0.600860619028.
To find tan of another number, please enter the number below and press "Calculate Tan".
What is Tan 32 degrees?
Go here for the next angle we converted.