270°

## What is the period of sin?

The period of the sine curve is the length of one cycle of the curve. The natural period of the sine curve is 2π. So, a coefficient of b=1 is equivalent to a period of 2π. To get the period of the sine curve for any coefficient b, just divide 2π by the coefficient b to get the new period of the curve.

## How do you do COS 1 on a calculator?

Explanation:

1. Press the “2nd” button to be able to access the cos−1 function. The word “2nd” show up in the bottom left hand corner of the screen.
2. Press the “COS” button to access the cos−1 function.
3. Enter your number with the number pad.
4. Press the “Enter =” key to return the result.

## What is COS 1 in terms of pi?

Cos 1 value is 0 degree.

## How do you convert COS to degrees?

You can convert radians into degrees by multiplying it with 180/Math. PI , Furthermore the inverse cosine (or cos^-1 like some textbooks denote this) is the Math. acos method ( a standing for arc ). double AB = 125; double AC = 150; double angleA = Math.

## How do you calculate cos?

In any right angled triangle, for any angle:

1. The sine of the angle = the length of the opposite side. the length of the hypotenuse.
2. The cosine of the angle = the length of the adjacent side. the length of the hypotenuse.
3. The tangent of the angle = the length of the opposite side. the length of the adjacent side.

## What is cos in math?

In a right angled triangle, the cosine of an angle is: The length of the adjacent side divided by the length of the hypotenuse. The abbreviation is cos. cos(θ) = adjacent / hypotenuse.

## What is the formula of Cos?

The law of cosines generalizes the Pythagorean formula to all triangles. It says that c2, the square of one side of the triangle, is equal to a2 + b2, the sum of the squares of the the other two sides, minus 2ab cos C, twice their product times the cosine of the opposite angle.

## Why is tan 90 undefined?

Why is Tan 90 undefined? As we have got the result as infinity, and we cannot define infinity, therefore tan 90 is undefined.

## What is COS 1 on unit circle?

The cosine is the length of the adjacent side (which is the x-coordinate) divided by the length of the hypotenuse (which is 1). So the cosine is just the x-coordinate! Similarly, the sine is the length of the opposite side (which is the length of the y-coordinate) divided by the length of the hypotenuse (which is 1).

## Is Arccos the same as 1 cos?

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).

## How do you know if a point is on the unit circle?

Explanation: The unit circle is by definition a circle with radius equal to 1 and center (0,0), so the distance of the points (x,y) in that circle to the center is equal to 1, hence by the distance formula : √a2+b2=1⟺a2+b2=1. If it equals 1, it is on the unit circle.

## What is COS 1 used for?

The inverse trigonometric functions sin−1(x) , cos−1(x) , and tan−1(x) , are used to find the unknown measure of an angle of a right triangle when two side lengths are known.

## What is value of cos 120 degree?

Value of Cos 120 is -½.

## Is cot cos a sin?

tan x = sin x cos x . The cotangent of x is defined to be the cosine of x divided by the sine of x: cot x = cos x sin x . 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 .

## What is tan-1 called?

Inverse tangent is also called arctangent and is labeled \begin{align*}\tan^{-1}\end{align*} or arctan. The “-1” indicates inverse. Inverse Sine: If you know the opposite side of an angle and the hypotenuse in a right triangle, you can use inverse sine to find the measure of the angle.

## 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 a Sin Cos Tan chart?

In trigonometry, sin cos and tan values are the primary functions we consider while solving trigonometric problems. These trigonometry values are used to measure the angles and sides of a right-angle triangle. Apart from sine, cosine and tangent values, the other three major values are cotangent, secant and cosecant.

## Where is Cos equal to?

The cosine of an angle is defined as the sine of the complementary angle. The complementary angle equals the given angle subtracted from a right angle, 90°. For instance, if the angle is 30°, then its complement is 60°.

## What value of sin is 0?

Answer) In Mathematics, the value of sin 0 degree is always equal to 0.

## How do you find sin given Cos?

Triangles! Patterns of right triangles. All triangles have 3 angles that add to 180 degrees. Therefore, if one angle is 90 degrees we can figure out Sin Theta = Cos (90 – Theta) and Cos Theta = Sin (90 – Theta).

## Where is tan equal to 1?

Important Angles: 30°, 45° and 60°

Angle Tan=Sin/Cos
30° 1 √3 = √3 3
45° 1
60° √3