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Trigonometry
Trigonometry is a field of mathematics. It is the study of triangles. Trigonometry includes planar trigonometry, spherical trigonometry, finding unknown values in triangles, trigonometric functions, and trigonometric function graphs.
3,810 Questions
What are the rules for adding and subtracting integers?
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
How do you inscribe a circle in a square?
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.
How do you solve easy trigonometric functions of angle?
With ease, I suppose. The question depends on what you consider easy trigonometric functions.
What could be the ratio between the lengths of the two legs of a 30-60-90 triangle A B C D E F?
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
How do you know when to use tangent cosine or sine?
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.
How to get a volume of a triangular prism?
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.
How would you solve sin3x equals sinx?
To start, try breaking down
sin3x using a double angle formula.
Message me if you need more help!
What is a formula to calculate the perceived size of an object depending on its distance?
The perceived size is usually measured in terms of the angle subtended by the object at the observation point.
Suppose an object of length L, is at a distance D. Then the angular size perceived by an observer who is along the perpendicular bisector of the object, is 2*arctan(L/2D). The formula holds for small divergences from the perpendicular bisector but not significant ones.
For example, for a person standing near the base of a tower, the perceived size is arctan(L/D).
The y (assuming the 800 is with respect to the horizontal) is 98.48 N, and the x is 17.36 N.
What is the value of tan 1 upon 2?
For the tangential value tan θ = 1/2, the angle θ is 26.565° (0.464 radians).
The tangent is the opposite side over the adjacent side for an angle,
or otherwise sin θ /cos θ.
How do you prove one - tan square x divided by one plus tan square xequal to cos two x?
(1 - tan2x)/(1 + tan2x) = (1 - sin2x/cos2x)/(1 + sin2x/cos2x)
= (cos2x - sin2x)/(cos2x + sin2x)
= (cos2x - sin2x)/1 = (cos2x - sin2x) = cos(2x)
The simplistic solution is as follows:
The component of the force in the horizontal plane is 41.8*cos(25) = 37.9 N.
The distance travelled is pi*18 metres so work done = 37.9*18 = 2142 Joules.
What are the answers to law of cosines in A plus?
The law of cosines can be written in one form as: c2 = a2 + b2 - 2abCos C.
Without 3 of the 4 variables being given, there is no way to answer this question.
How do you find the lengths of a rhombus?
A rhombus is a 4 sided quadrilateral whose sides are equal in lengths and can be measured with a ruler.
I assume you mean sign and not sine!
The answer is that there is no best sign. I am sorry to have to disillusion you but in reality star signs are nonsense. They are just a small number of stars that seem to be close together and form some shape. Some of the stars are close to the earth and the solar system whereas others, in the same star sign, are millions of light years further away. There is, therefore, no association between the stars that make up a star sign.
