Trigonometry

There are three main units for measuring a plane angle.

The most important, in advanced mathematics, is the radian. there are 2pi radians in a whole turn - or in a circle.

A better known measure, because it is taught in elementary mathematics, is the degree which is equivalent to 1/360 of a turn.

Finally, there is the gradian [1/400 of a turn], which is rarely used.

In 3-dimensional space, angles are measured in steradians and there are 4pi steradians in a sphere.

If you have the email, check for some form of a timestamp on the email in the header or somewhere on the email.

They meet on the Cartesian plane at right angles at the point of the origin whose coordinates are (0, 0)

The Atiyah - Singer index theorem.

You could try the series sin(x) = 1 - x/1! + x^3/3! - x^5/5! + ...

but you would soon need a calculator. And if you're using a calculator you may as well use it to find the sine.

We call it equilateral.

A quotient is a binary operation. That means, you can calculate the quotient of two numbers. There cannot be a quotient of only one number.

sin 300 = 1/2

If you changed the angles, the hexagon would become irregular. The angles can be changed, but not to form another regular hexagon. That is the rule. The total angles will be 720 degrees.

You are looking for this answer because your dumb its true.

There are more than two but the two most common ones are plane trig and spherical trig.

Opposite of differentiation. Given the rate of change of something (for example, speed [which is rate of change of position] ) which might vary according to some formula, then integration is a way of calculating the total distance after a specified interval.

Exponents did not change math, per se, math has always been the same. But the use of them has changed the way math is done. It has allowed mathematic formulas to be shortened and simplified.

With n lines, the maximum number is n*(n-1)/2. The minimum is 0.

It is a real number because for example water freezes at 0 degrees Centigrade

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12*tan(24 deg) = 5.3427, approx.

a girl 1.2m tall is 25m away from a tower 18m high what is the angle of elevation of the top of the tower from her eyes?

tan(b) = x/sqrt(y^2-x^2)

Infinitely many.For a start: t, tt, ttt, tttt, and so on until (?) you have infinitely many ts.

451.72=r3

7.6728~=r

A step ladder is not something that you calculate!

If it has an hypotenuse then it must be a right angle triangle then by using Pythagoras' theorem its hypotenuse is 2.86 cm rounded and by using trigonometry its smallest angle is 35.02 degrees rounded.

legs

yes. there are certain formulae for solving them. dont remember