2nd October 2019

mathwarehouse
13

What is the value of tan inverse?

The Value of the Inverse Tan of 1. As you can see below, the inverse tan-1 (1) is 45° or, in radian measure, Π/4. It is helpful to think of tangent as the ratio of sine over cosine, ie: . Therefore, tan(Θ) to equal 1, sin(Θ) and cos(Θ) must have the same value.

Is the inverse of tan cot?

While calculators can compute the inverse sine, cosine, and tangent, they usually do not have buttons for the inverses of cotangent, cosecant, and secant. To compute these inverse function values, you have to use their relationships to the other three functions. Example: Find cot-1(2.5) rounded to four decimal places.
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