answersLogoWhite

0


Best Answer

Sine sum identity: sin (x + y) = (sin x)(cos y) + (cos x)(sin y)

Sine difference identity: sin (x - y) = (sin x)(cos y) - (cos x)(sin y)

Cosine sum identity: cos (x + y) = (cos x)(cos y) - (sin x)(sin y)

Cosine difference identity: cos (x - y) = (cos x)(cos y) + (sin x)(sin y)

Tangent sum identity: tan (x + y) = [(tan x) + (tan y)]/[1 - (tan x)(tan y)]

Tangent difference identity: tan (x - y) = [(tan x) - (tan y)]/[1 + (tan x)(tan y)]

User Avatar

Wiki User

โˆ™ 2012-01-15 02:28:52
This answer is:
๐Ÿ™
0
๐Ÿคจ
0
๐Ÿ˜ฎ
0
User Avatar

Add your answer:

Earn +20 pts
Q: What are the sum and difference identities for the sine cosine and tangent functions?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What is difference of using sine to cosine and tangent?

They are different trigonometric functions!


What are the trigonometric functions?

sine, cosine, tangent, cosecant, secant and cotangent.


What are circular functions?

Sine, Cosine, Tangent, Cotangent, secant and cosecant


What are functions in trigonometry?

The basic functions of trigonometry are: sine cosine tangent secant cosecant cotangent


How does the tangent function relate to sine and cosine?

Tangent = sine/cosine provided that cosine is non-zero. When cosine is 0, then tangent is undefined.


What are the six trigonometric functions?

Sine Cosine Tangent ArcSine ArcCosine ArcTangent


How do you find theta for right triangle?

You can use your trigonometric functions (sine, cosine, and tangent).


What is trigonometry's circular function?

The basic circular functions are sine, cosine and tangent. Then there are their reciprocals and inverses.


What are the six trigonometric functions of special angles?

sine, cosine, tangent, cosecant, secant and cotangent.


What are the trigonometric function of an acute angle?

The trigonometric functions are sine, cosine and tangent along with their reciprocals and the inverses. Whether the angle is acute or obtuse (or reflex) makes no difference).


How do you find sine cosine and tangent of 210 degrees?

Sine = -0.5 Cosine = -0.866 Tangent = 0.577


How do you find an angle using sine cosine tangent?

If you know the angle's sine, cosine, or tangent, enter it into the calculator and press <inverse> sine, cosine, or tangent. On MS Calc, in Scientific Mode, using Degrees, enter 0.5, then check Inv and the press sin. You should get 30 degrees. The other functions work similarly.


How do you solve tangent cosine tangent-cosine.?

It isn't clear what you want to solve for. To solve trigonometric equations, it often helps to convert other angular functions (tangent, cotangent, secant, cosecant) into the equivalent of sines and cosines. However, the details of course depend on the specific case.


Is it possible to model everyday sounds and speech with trigonometric functions like sine cosine tangent cosecant secant or cotangent?

Yes, but only sine or cosine will suffice.


What are the functions of trigonometry?

The six basic functions of trigonometry are the sine, cosine, tangent, cosecant, secant, and cotangent functions. Abbreviated sin, cos, tan, csc, sec, cot.


Do you need a right traingle to use sine cosine and tangent?

Yes, sine, cosine, tangent definitions are based on right triangles


What does sin cos and tan?

Not sure what the question means. These are abbreviations for the three primary trigonometric functions of angles: sine, cosine and tangent.


Is the sine functions an odd function?

Yes. Along with the tangent function, sine is an odd function. Cosine, however, is an even function.


What is the relationship between the tan and cot?

Cotangent is 1 / tangent. Since tangent is sine / cosine, cotangent is cosine / sine.


The laws of sine cosine and tangent are used where?

in trigonometry


Does tangent of x equal cosine divided by sine?

No, it does not.


What jobs use sine cosine and tangent?

Trigonometry


If the tangent of an angle is 2 what is the cosine?

The cosine is ±1/sqrt(5) = ±0.4472 (approx).


Which ratio describes the tangent function?

The ratio of sine and cosine.


The tangent of an angle equals the ratio of the?

Sine of the angle to its cosine.