Trigonometry

1

You are referring to a special case of shape

its called a line

It is 1/4.

who invented subtraction?

Only one, they are all 90 degree angles.

Zero. Tangent = sine/cosine. sin(0) = 0 and cos(0) = 1, so 0/1 = 0.

Acute . . . less than 90°

Right . . . 90°

Obtuse . . . more than 90° and less than 180°

Straight . . . 180°

Reflex . . . more than 180° and less than 360°

A cotan (abbreviation of cotangent) is a triganomic function used to define the ratio of the length of the adjacent side to the lenth of the opposite side.eg.

Cot A = 1/tan a = adacent/ opposite = b/a.

It just simplifies down to 1=1. You have to use your trig identities... tan=sin/cos cot=cos/sin thus tan x cot= (sin/cos) (cos/sin) since sin is in the numerator for tan, when it is multiplied by cot (which has sin in the denominator) both of the signs cancel and both now have a value of 1. The same happens with cos. so you get 1 x 1=1 so there is your answer. just learn your trig identities and you will understand

sin4x=(4sinxcosx)(1-2sin^2x)

Sine 153 = 0.806400581

when you add two positive integers the answer is always positive

when you add two negative integers the answer is positive

when you add one negative and on positive integer, the answer is negative

subtracting two negative numbers gets a negative answer

subtracting two positive numbers- the answer depends

subtracting a negative and positive number- the answer depends, the positive number would have to be bigger than the negative to achieve a negative number, and if the positive number is less, than the answer is still negative

take the radius as half of the length of the side of square and use the point where two diagonals of the square intersect as the center of the circle. with this info , the circle can be drawn.

With ease, I suppose. The question depends on what you consider easy trigonometric functions.

It appears that you got distracted by the 'A B C D E F', and forgot to

give us the list of choices.

The ratio of the lengths of the two legs of a 30-60 right triangle must be

one of these:

-- sqrt(3)

-- 1.732 (rounded)

-- 1/3 sqrt(3)

-- 0.577 (rounded)

-- 1/sqrt(3)

The arcsine is the angle whose sine is equal to the given value. arcsine is also called sine inverse (sin-1 ) if sin 30o = 1/2 , then sin-1 1/2 = 30o

6.00

It is a FALSE statement.

It depends on what information you already have. For example, if you know the length of two sides of a triangle, you can easily find the tangent. Or, if you know the length of two angles and a side, you can find the other sides as well, using the tangent, cosine, and sine as needed.

To start, try breaking down

sin3x using a double angle formula.

Message me if you need more help!

Multiply the length of the prism by the area of the triangular face.

How you find the area of the triangular face will depend on what information you have about the triangle: 3 sides, 2 sides and the included angle, 1 side and 2 angles, base and vertical height or any of a number of other sets of data.

Sin(80 degrees) = 0.9848, approx.

The y (assuming the 800 is with respect to the horizontal) is 98.48 N, and the x is 17.36 N.

(1 - tan2x)/(1 + tan2x) = (1 - sin2x/cos2x)/(1 + sin2x/cos2x)

= (cos2x - sin2x)/(cos2x + sin2x)

= (cos2x - sin2x)/1 = (cos2x - sin2x) = cos(2x)