- What’s the difference between a sin and cos graph?
- What is the maximum value of 1 Cos A?
- Why is tan 90 undefined?
- What is cos in terms of sin?
- What is the value of sin and cos?
- Why Sine is called sine?
- How do you add Cos?
- Are sin and cos reciprocals of each other?
- Why cosine is called cosine?
- What is sine formula?
- What is COS plus sin?
- How do you convert COS to sin?
- What is the relationship between sin and cos?
- What are the three identities of trigonometry?

## What’s the difference between a sin and cos graph?

In a cosine graph, a positive or negative number vertically flips the graph and determines whether the graph starts at the maximum (if it’s positive) or minimum (if it’s negative).

For a sine graph, a positive or negative number vertically flips the graph like it does with a cosine graph..

## What is the maximum value of 1 Cos A?

The minimum value of cosx is -1 (for example when x is pi radians), and so the maximum value of 1-cosx is 1-(-1) = 1+1 =2.

## Why is tan 90 undefined?

At 90 degrees we must say that the tangent is undefined (und), because when you divide the leg opposite by the leg adjacent you cannot divide by zero. In the third quadrant the hypotenuse extended will now meet the tangent line above the x-axis and is now positive again.

## What is cos in terms of sin?

Sine and cosine are cofunctions. Therefore, the relationship sinx=cos(90−x) and cosx=sin(90−x) applies.

## What is the value of sin and cos?

If θ be an acute angle, the values of sin θ and cos θ lies between 0 and 1 (both inclusive). sin 60° = √3/4 = √3/2; cos 90° = √(4/4) = 1. cos 90° = √(0/4) = 0.

## Why Sine is called sine?

The word “sine” (Latin “sinus”) comes from a Latin mistranslation by Robert of Chester of the Arabic jiba, which is a transliteration of the Sanskrit word for half the chord, jya-ardha.

## How do you add Cos?

To get the other two product-to sum formulas, add the two sine formulas from equation 48 and equation 49, or subtract them. Here are all four formulas together: (52) cos A cos B = ½ cos(A − B) + ½ cos(A + B) sin A sin B = ½ cos(A − B) − ½ cos(A + B)

## Are sin and cos reciprocals of each other?

Sine, cosine, and tangent each have a reciprocal function. … We already know that regular numbers have reciprocals (2 and 1/2 are reciprocals, for example), but we can also flip our trig functions on their heads. Cosecant is the reciprocal of sine. Its abbreviation is csc.

## Why cosine is called cosine?

The ratio of the adjacent side of a right triangle to the hypotenuse is called the cosine and given the symbol cos. Finally, the ratio of the opposite side to the adjacent side is called the tangent and given the symbol tan.

## What is sine formula?

= 0.500. The sine function, along with cosine and tangent, is one of the three most common trigonometric functions. In any right triangle, the sine of an angle x is the length of the opposite side (O) divided by the length of the hypotenuse (H). In a formula, it is written as ‘sin’ without the ‘e’:

## What is COS plus sin?

This trig identity shows that a combination of sine and cosine functions can be written as a single sine function with a phase shift. … To have equality for any value of t , the coefficients of cos(t) and sin(t) must be equal on the left and right sides of the equation.

## How do you convert COS to sin?

The identities that arise from the triangle are called the cofunction identities. These identities show how the function values of the complementary angles in a right triangle are related. For example, cosθ = sin (90° – θ) means that if θ is equal to 25 degrees, then cos 25° = sin (90° – 25°) = sin 65°.

## What is the relationship between sin and cos?

Sine and Cosine of Complementary Angles – MathBitsNotebook(Geo – CCSS Math) The sine of any acute angle is equal to the cosine of its complement. Let’s start our investigation of this concept by looking at an example: In right triangle ACB, as shown below, m∠A = 22º, BC = 15 and AB = 40.

## What are the three identities of trigonometry?

The three main functions in trigonometry are Sine, Cosine and Tangent….Sine, Cosine and Tangent.Sine Function:sin(θ) = Opposite / HypotenuseCosine Function:cos(θ) = Adjacent / HypotenuseTangent Function:tan(θ) = Opposite / Adjacent