 # Question: What Is The Inverse Of Cos 1 2?

## How do you solve inverse sine?

Inverse Sine FunctionStart with:sin a° = opposite/hypotenuse.sin a° = 18.88/30.Calculate 18.88/30:sin a° = 0.6293…Inverse Sine:a° = sin−1(0.6293…)Use a calculator to find sin−1(0.6293…

):a° = 39.0° (to 1 decimal place).

## Is Arccos the same as inverse cos?

Arccos definition The arccosine of x is defined as the inverse cosine function of x when -1≤x≤1. (Here cos-1 x means the inverse cosine and does not mean cosine to the power of -1).

## What is the exact value of cos 60?

1/2The angle with measure 60° is one of those angles that has a well-known cosine value: cos(60°) = 1/2.

## What is value of cos?

The value of cos 0 is 1. Here, we will discuss the value for cos 0 degrees and how the values are derived using the quadrants of a unit circle.

## Is SEC the inverse of cos?

The secant is the reciprocal of the cosine. It is the ratio of the hypotenuse to the side adjacent to a given angle in a right triangle.

## What is the value of cos 1 2?

Where a=1 . The cosine in this case is given by xr or the ratio of the adjacent side over the hypotenuse. This gives cos(60o)=12 .

## What is the sin inverse of 1?

The Value of the Inverse Sin of 1 As you can see below, the inverse sin-1 (1) is 90° or, in radian measure, Π/2 . ‘1’ represents the maximum value of the sine function . It happens at Π/2 and then again at 3Π/2 etc..

## What is the sin inverse of 1 2?

We know that sin(π6)=12 and so, sin(−π6)=−12 . Therefore, the (principal) inverse sine of −12 is −π6 .

## Is cot inverse of tan?

cot(x) = 1/tan(x) , so cotangent is basically the reciprocal of a tangent, or, in other words, the multiplicative inverse. arctan(x) is the angle whose tangent is x.

## What is the value of Cos inverse half?

120 is 2π/3. Hence Principal Value of Cos⁻¹ ( -1/2 ) is ( 2π/3 ).

## What is the principal value of Cos inverse root 3 by 2?

2 Answers. The principal value of cos-1(-√3/2) is 5π/6.

## Is SEC a COS 1?

The secant of x is 1 divided by the cosine of x: sec x = 1 cos x , and the cosecant of x is defined to be 1 divided by the sine of x: csc x = 1 sin x .

## How does inverse trig work?

You use inverse trigonometry functions to solve equations such as sin x = 1/2, sec x = –2, or tan 2x = 1. In typical algebra equations, you can solve for the value of x by dividing each side of the equation by the coefficient of the variable or by adding the same thing to each side, and so on.

## What is COS 1 called?

The notation cos-1(x) is reserved for the inverse cosine which is also called “arccosine” and can be written as arccos(x) or, on many calculators, acos(x). The same applies to inverse sine, inverse tangent, and so on.

## What is the inverse of cosine?

The arccos function is the inverse of the cosine function. It returns the angle whose cosine is a given number. Means: The angle whose cosine is 0.866 is 30 degrees. … Use arccos when you know the cosine of an angle and want to know the actual angle.

## What is the principal value of Cos inverse?

Therefore, cos−1 x = 2nπ ± α, where, 0 ≤ α ≤ π and (- 1 ≤ x ≤ 1). Therefore, principal value of cos−1 ½ is π3 and its general value = 2nπ ± π3. Therefore, principal value of cos−1 (-½) is 2π3 and its general value = 2nπ ± 2π3.

## What is inverse sine called?

The inverse is used to obtain the measure of an angle using the ratios from basic right triangle trigonometry. … The inverse of sine is denoted as Arcsine or on a calculator it will appear as asin or sin-1. Note: this does NOT mean sine raised to the negative one power.