1, the tangent value refers to the ratio of the opposite side of an acute angle to the other adjacent right angle side in a right triangle. For any real number x, there is a unique angle, which corresponds to a unique tangent tanx. The function established according to this correspondence law is called tangent function.

2. Common tangent values: tan 22.5 = √ 2- 1, tan 30 = √ 3/3, tan 45 = 1, tan 60 = √ 3, tan 67.5 = √ 2+ 1.

Extended data:

Nature:

1, domain: {x | x≦(π/2)+kπ, k∈Z}

2. Range: real number set r

3. Parity check: odd function

4. Monotonicity: in the range of (-π/2+kπ, π/2+kπ), k∈Z is a increasing function.

5. Periodicity: The minimum positive period π (can be calculated by π/| ω |).

6. Maximum value: there is no maximum value and minimum value.

App application

The tangent value is equal to the slope in the numerical value, and the slope = the tangent value x 100%.

Trigonometric functions are widely used in the field of complex numbers and also in physics.

Trigonometric function plays an important role in topographic survey and mineral exploration.

Trigonometric functions are also used to measure the height of buildings or peaks from a visual angle.

References:

Baidu Encyclopedia-Tangent Value