Please forward this error screen to sharedip-1601531662. Specifically, they are the inverses of the sine, cosine, tangent, cotangent, secant, and cosecant functions, and are used to obtain an angle from any of the angle’s trigonometric ratios. Inverse integration formulas of inverse trigonometric functions pdf functions are widely used in engineering, navigation, physics, and geometry.

There are several notations used for the inverse trigonometric functions. The most common convention is to name inverse trigonometric functions using an arc- prefix, e. This convention is used throughout the article. When measuring in radians, an angle of θ radians will correspond to an arc whose length is rθ, where r is the radius of the circle.

Thus, in the unit circle, “the arc whose cosine is x” is the same as “the angle whose cosine is x”, because the length of the arc of the circle in radii is the same as the measurement of the angle in radians. Similarly, in computer programming languages the inverse trigonometric functions are usually called asin, acos, atan. John Herschel in 1813, are often used as well in English sources, and this convention complies with the notation of an inverse function. Nevertheless, certain authors advise against using it for its ambiguity.