# trigonometric functions

im compeletely lost with the trigonometric functions...can anyone explain clearly to me?

Are you lost on the definitions?...where is the problem.
You need to be able to draw and label all the parts of a triangle, the hypotenuse and legs. Then be able to define sine, cosine, tangent, etc. After that you need to be able to identify identities and manipulate the trig functions.
You should be able to find plenty of sources to help to. Look at the jump box up above and find trignometry. There's plenty there to help you.
I need more specifics on your difficulties to continue here.

the problem is that..
i don't know what are sin, cos, and tan, and how to manipulate the trig functions

Be sure to check the jump box at the top. There is a trig section here. If you follow that link there is a page with a lot of trig exercises. The second section covers the definitions of the functions.
Sine is the ratio of a leg opposite an angle to the hypotenuse.
Cosine is the ratio of the leg adjacent to an angle to the hypotenuse.
Tangent is the ratio of ratio of a leg opposite an angle to the leg adjacent to the angle.
Check the site above and try some specific questions. Unfortunately this site is set up to help with homework, not for teaching. I'll do what I can to help you though.

sin can be written as y/r (r= radius)
cosine = x/r
tan= y/x
cosecant= r/y
secant= r/x
cotangent= x/y
as more of a definition, sin = opposite leg/hypotenus
and cosecant is the inverse of sine, secant is the inverse of cosine, and cotangent is the inverse of tangent

Amiga, this is correct somewhat. But it is based on right triangles (x,y are right angles, and the lower definitions you gave are right triangles). But all angles have sin, cos, and tan functions whether or not they are in a triangle. But in a sense you are correct, a beginning student starts with the above. Thanks.

I need to learn to write algebraic expression that is equivalent to the expression...

sec[arcsin(x-1)]

I need to learn to write algebraic expression that is equivalent to the expression...

sec[arcsin(x-1)]

what are 2 equivalent statements on

sec15
cos80
csc70

and how do you get them??

1. 👍 0
2. 👎 0
3. 👁 337

## Similar Questions

1. ### Math

Explain why domain restrictions for inverse trigonometric functions are necessary? I’m having trouble understanding this topic could anyone explain? My teacher makes no sense :/

2. ### Math Trig

Find the values of the six trigonometric functions of an angle in standard position if the point with coordinates (12, 5) lies on its terminal side? Please explain how!

3. ### Math.

1. At 4:00 A.M. the outside temperature was -28. By 4:00 P.M. it rose 38 degrees. What was the temperature at 4:00 P.M.? 10 2.Three friends decided to exercise together four times a week to lose fat and increase muscle mass. While

4. ### US history

In a paragraph, explain how the writing associated with the Lost Generation reflected the new emphasis on consumerism in American culture. Provide examples of Lost Generation authors and literary works.

1. ### Math

Jared's football team lost a total of 12 yards during 4 plays of the game. They lost the same number of yards during each of the plays. What is an integer that can represent the number of yards lost during each play?

2. ### math

Sketch a right triangle corresponding to the trigonometric function of the acute angle θ. Use the Pythagorean Theorem to determine the third side and then find the other five trigonometric functions of θ. cot(θ) = 3 sin(θ)=

3. ### Math(Correction)

Use the given function values and trigonometric identities (including the relationship between a trigonometric function and its cofunction of a complementary angle) to find the indicated trigonometric functions. Sorry for the

4. ### Statistics

Given the following information, determine the 68.3 percent, 95.5 percent, and 99.7 percent confidence intervals. overbar above X equals 4.33 comma SE sub m equals 3 I've looked at the table as recommended. I just do not

1. ### mathematics

The quarterback lost 15 yards on one play. Write an integer to represent the number of yards lost.

2. ### Math

A hockey team played 12 games. They won 2 more than they lost. They lost 1 more than they tied. How many games did they win, lose, and tie?

3. ### Math

Can you find (a) a sine graph which touches the lines y = 3 and y = 1? (b) a cosine graph which crosses the x-axis at x = 1 and x = −1? (c) a tangent graph which passes through the point (π/3, 0) and for which the line x= π/2

4. ### math

Sara, Cathy, and Tina have just finished playing three games. There was only one loser in each game. Sara lost the first game, Cathy lost the second game, and tina lost the third game. After each game, the loser was required to