Trigonometry

a2 = b2 + c2 - 2bc cos(alpha)

b2 = a2 + c2 - 2ac cos(beta)

c2 = a2 + b2 - 2ab cos(gamma)

There are all three formulas. Do not forget to use, arc-cos, when finding angles.

Yes.

What best way to teach mathematics

sec(x)=1/cos(x) - (hint: look at the third letter: sec->(1/)cos,

cosec->(1/)sin, cot->(1/)tan)

pi divided by 6 is a constant and so its first derivative is 0. And since that is also a constant, the second derivative is 0. It is not clear what f(x) = csc(x) has to do with that!

If you are in school and are studying trig then you are using trig in real life.

asdasdas

It is a polynomial of the fourth degree in X.

A lot of people think that the face in geometry is the side of a three dimensional figure, but it can really mean the specific side of a 2-d figure as well. Face just means the front of a figure for the side you're looking at. You can have the face of a circle, for example. It just means the side of the circle you're referring to.

• there is a variable component of motion in the direction at right angles to the direction of propagation of the wave.
• acceleration is directly proportional to displacement from the direction of propagation of the wave, and
• the direction of acceleration is opposite to that of the displacement.

It is 82 degrees and 12 minutes, as in the question = 82.2 deg = 1.4347 radians.

It is a trigonometric function whose argument is the number theta.

There are 59875200 ways.

According to Math experts, Hipparchus, Menelaus, and Ptolemy are responsible for developing Greek trigonometry for the purposes of studying differences in shapes of the planets, sun and moon. By observing the shapes of each, they were able to determine the ratios and areas of each one.

Trigonometry mainly but also geometry, algebra.

excellent project

Tessellations

Change all the signs.

Suppose you have the quadratic equation: y = ax2 + bx + c

Its additive inverse is -ax2 - bx - c.

The tangent (of a curve) is a vector that is tangent (perpendicular to the normal), i.e. the instantaneous velocity of the curve at a specific point. As such, the initial tangent is the initial velocity of the curve at the point where t=0.

Stated in other terms, the tangent is the slope of the line at a point. This is expressed (in two dimensions, but applicable to higher dimensions), as the line that has x and y coordinates equal to the point of tangency, and slope equal to the limit of delta y over delta x as delta x (and delta y) approaches zero.

Yes a tangent is a straight line thattouches a curve at only one point

But there is a tangent ratio used in trigonometry

the acient greek gods

If it is signed over to me then your name has got nothing to do with it. I can do whatever I like with the car.

It was the French mathematician Rene Descartes who introduced the Cartesian plane and some of the terms are:-

Horizontal x axis

Vertical y axis

Both axes have a number line and are perpendicular to each other at (0, 0)

The origin is at the coordinates of (0, 0)

The equations of straight line are plotted on it.

The equation of a straight line is y = mx+c whereas m is the slope of the line and c is the y intercept

civil engineers have special heavy duty boots called engineers boots.

these boots are quite expensive

so they use trigonometry to save money

they can stand on one side of a river set up 2 points a known distance apart

and just sight across the river thru a protractor with a telescope to the other side at any target they see

this way they dont need to carry a tape across the river to measure the distance

their boots would get wet and muddy

when they do this for a few years they save enough money to hire a rodman

to cross the river and place high visibility targets for them so they make less mistakes and make even more money