- What is the formula of sin 3x?
- What are the six trigonometric functions?
- What does SOH CAH TOA mean?
- What is a cosine?
- What is the formula of tan3x?
- What is 1 cos 2x equal to?
- Where is angle of depression?
- What is mean by angle of depression?
- What is the difference between angle of elevation and depression?
- What is the formula for 1 sin 2x?
- What is θ in math?
- What is the formula for Tan 2x?
- Why is PH a sin?
- What is the angle of depression in trigonometry?
- What is the formula of Sin Cos Tan?
- What does the symbol Δ mean?
- Why Sine is called sine?
- What are the 3 trigonometric ratios?
- What are the basics of trigonometry?
- What is Secx?
- What is the formula for sin?

## What is the formula of sin 3x?

The prupose of this page is to prove the following formula: \sin 3x =4\sin x\sin(60^{\circ}-x)\sin(60^{\circ}+x)..

## What are the six trigonometric functions?

There are six main trigonometric functions:Sine (sin)Cosine (cos)Tangent (tan)Secant (sec)Cosecant (csc)Cotangent (cot)

## What does SOH CAH TOA mean?

Sine equals Opposite over Hypotenusewebsite feedback. SOHCAHTOA. A way of remembering how to compute the sine, cosine, and tangent of an angle. SOH stands for Sine equals Opposite over Hypotenuse. CAH stands for Cosine equals Adjacent over Hypotenuse.

## What is a cosine?

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 tan3x?

tan(pi/4) = 1 and so does tan(5pi/4) and tan(9pi/4). 3x = pi/4 gives x = pi/12, 3x = 5pi/4 gives x = 5pi/12 and 3x = 9pi/4 gives x= 3pi/4. [Note: The more astute will notice that tan(3x) = 1 has an infinite number of solutions, not just pi/12, 5pi/12 and 9pi/12.

## What is 1 cos 2x equal to?

Cos2x is a double angle trigonometry that has the espansion of cos2x = cos^2(x) -sin^2(x) but you know that sin^2(x) + cos^2(x) = 1.

## Where is angle of depression?

The angle of depression is the angle between the horizontal and your line of sight (when looking down). Now, pretend that the spot on your kitchen floor could look back up at you.

## What is mean by angle of depression?

Angle of Depression. The “downwards” angle from the horizontal to a line of sight from the observer to some point of interest. If the angle goes “upwards” it is called an Angle of Elevation.

## What is the difference between angle of elevation and depression?

The angle that would form if it was a real line to the ground is an angle of elevation. Exact opposite if your looking diagonally down; the angle between the “sight line” and the horizon or sky is the angle of depression.

## What is the formula for 1 sin 2x?

1+sin2x = 1+2sinxcosx = sin^2x + cos^2x + 2sinxcosx = (sinx + cosx)^2 = an alternate way of expressing 1+sin2x -> if this is what you were looking for.

## What is θ in math?

Theta (θ ) is a symbol used to denote the unknown measure of an angle. It is used mostly in displaying the trigonometric ratios of sine, cosine, and tangent. This trigonometry-related article contains minimal information concerning its topic. … You can help the Mathematics Wikia by adding to it.

## What is the formula for Tan 2x?

tan(x) is an odd function which is symmetric about its origin. tan(2x) is a double-angle trigonometric identity which takes the form of the ratio of sin(2x) to cos(2x).

## Why is PH a sin?

Where x is the angle, o is the length of the triangle side opposite the angle and h is the length of the triangle’s hypotenuse. If the length of the triangle side opposite x is identified as p, then p/h is fine. I can see why using o as a variable name would be discouraged, since it is easily mistaken for a zero.

## What is the angle of depression in trigonometry?

If a person stands and looks down at an object, the angle of depression is the angle between the horizontal line of sight and the object. Trigonometry can be used to solve problems that use an angle of elevation or depression.

## What is the formula of Sin Cos Tan?

Sin Cos Tan Formula Sine θ = Opposite side/Hypotenuse = BC/AC. Cos θ = Adjacent side/Hypotenuse = AB/AC. Tan θ = Opposite side/Adjacent side = BC/AB.

## What does the symbol Δ mean?

Upper-case deltaUpper-case delta (Δ) often means “change” or “the change in” in mathematics.

## Why Sine is called sine?

In mathematics, the sine is a trigonometric function of an angle. … 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.

## What are the 3 trigonometric ratios?

There are three basic trigonometric ratios: sine , cosine , and tangent . Given a right triangle, you can find the sine (or cosine, or tangent) of either of the non- 90° angles. Example: Write expressions for the sine, cosine, and tangent of ∠A .

## What are the basics of trigonometry?

Trigonometry, the branch of mathematics concerned with specific functions of angles and their application to calculations. There are six functions of an angle commonly used in trigonometry. Their names and abbreviations are sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant (csc).

## What is Secx?

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 the formula for sin?

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’: Often remembered as “SOH” – meaning Sine is Opposite over Hypotenuse.