Trigonometry

If sine theta is 0.28, then theta is 16.26 degrees. Cosine 2 theta, then, is 0.8432

The side opposite the right angle is the hypotenuse.

Adjacent means 'next to'

since x is negative you use the identity cot-1(x)=tan-1(1/x)+pi. Tan-1(1/-sqrt3) + pi 5pi/6 + pi =pi

lim as h->0 of (f(x+h) - f(x))/h

or

lim as x->a of (f(x) - f(a))/(x - a)

No, they are the inverse functions, while csc, sec and cot are the reciprocal functions.

To illustrate the difference, the inverse of f(x) = x+3 is f-1(x) = x-3

But the reciprocal of f(x) is 1/f(x) = 1/(x+3)

c

If the 3 sides are x, y and z then let s = (x+y+z)/2

Area = sqrt[s*(s-x)*(s-y)*(s-z)] sq cm.

Normally they are named as follows:

Top Right = I

Top Left = II

Bottom Left = III

Bottom Right = IV

138558 x 10-2

The three basic trigonometric ratios are sine (sin), cosine (cos) and tangent (tan)

They are found by comparing two of the three sides of a right triangle. The hypotenuse is the the longest side of the right triangle, and is opposite the right angle. The other two sides are the legs. One leg is adjacent to an angle, and the other is opposite the angle.

The three ratios are

sin(x) = opposite/hypotenuse

cos(x) = adjacent/hypotenuse

tan(x) = opposite/adjacent

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The previous answers are wrong.The answer is 1.5707963267949-0.962423650119207i.

they're the four squares that make up the coordinate grid.

As far as I know, there is no such word as "cosion." Are you asking about the mathematical term "cosine"? If so, it comes from trigonometry. In a right triangle, the cosine is the ratio of the length of the adjacent side to the length of the hypotenuse. The abbreviation for cosine is "cos."

You can determine the height of a mast by using the tangent. Measure the distance from the base, and the angle of elevation of the top of the mast as observed from that distance. The tangent is y over x, so substitute x for the distance from the base and y for the height of the mast. Solve from there.

For instance, if the angle is 60 degrees and the x distance is 25 feet, then...

tan (60) = y / 25

25 tan (60) = y

y = 43.3

- 0.966

An equation consists of two expressions, one on either side of an equality symbol.

Volume = Base Area times height

chetito

Bound the y values to anything you like, but to keep consistent with cosine and sine you may want to bound them between -1 and 1.

Bound the x values between -180 and 180 (if you're working in degrees) or however quickly you think people will get the point. Every 90 degrees draw a x^3 style line and draw dotted lines to symbolise the asymptotes.

Vectors.

1/3*pi*radius squared*height of cone=volume

4 years exactly.

Assuming you mean -90 degrees, not radians:

tan (-90) = [sin(-90)]/[cos(-90)] = (-1) / 0

You cannot divide by zero. tan (-90) is undefined/does not exist.

No.