Trigonometry

A tangent line is a line that is parallel to and intersecting a point on a curve, where the limit of the distance between two points on that curve (one of them being the point in question) and those two points also being on that line approaches zero.

Since a straight line has only one slope, at all points on the line, then there can only be one tangent line to a straight line, and the tangent line is the same line as the straight line.

Sine

Cosine

Tangent

ArcSine

ArcCosine

ArcTangent

stop cheating

First off, its isosceles.

An isosceles triangle is a triangle with two sides that have the same length. A triangle with 3 sides the same length is called equilateral, but it is also a form of an isosceles.

Note also that an isosceles will have two or more angles the same.

please answer this queand show the working out a large advertising ballon is tied to the roof of a 20 m high builing by a 50m rop which makes an angle of 42 degrees with the horizontal. find the height of the balloon above the ground correct to two decimal places?

Technically they don't because the definition of a point is a specific place of a certain object in a graph, and you could keep cutting up the point infinity times and still not have the most exact location as possible. Thus, a point can be any shape, but for a point there will never be an exact location or a definite size or shape. Most points in geometry are little circles such as on a line graph, but a point could be a square. A point is just the most exact location of something in a geometry problem. That's all it is.

Ummm... there is this thing called practice ;)

The first recorded functions had something to do with the chords of a circle.

Theta is the measure of the angle, whether in degrees or radians.

The purpose of trigonometry is to gather as much accurate measurements of distances given little information about angles or other distances. It is used in engineering, astronomy, city planning, drafting and designing, and construction.

That tool is called a protractor.

If you have a right triangle, the sine of an angle is the ratio of the opposite side to the hypotenuse.

Same as anywhere: opposite to a clock's conventional rotation. Mathematicians like to put x = 0º on the x-axis (so y = Sin x = 0) and measure anticlockwise from there.

I think 12

There is none because it is not true.

Archimedes

A pizza slice

2a+3a=5a

Trigonometry is specificly the study of a right triangle. For example, what is the cosine? Geometry is the study on shapes.

The question, as it appears, does not make any sense. Please try to use a sentence when asking a question, if it is not too much effort.

X an element of real numbers

Undefined!!!! Can't answer it! All sine and cosine values are between -1 and 1 !!!

sin(2*pi/65537) = 0.0001

cos(2*pi/65537) = 1.0000

to 4 dp.

Pythagoras. He has the Pythagorean Theorem named after him.

The differential of the sine function is the cosine function while the differential of the cosine function is the negative of the sine function.