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What are coterminal angles?

Any multiple of 360 degrees can be added or subtracted from an angle, and the answer is always a coterminal angle. A few examples on how to find coterminal angles are 45 + 360 = 405, 120 - 360 = -240, -77 + (2)360 = 643 and 2Ï€/3 + 2Ï€ = 8Ï€/3. Forty-five degrees and 405 degrees are coterminal to each other; however, they are not coterminal to any of the other examples listed. The properties of coterminal angles can be used to find the reference angle of an angle that is larger than 360 degrees. For example, if the reference angle of 765 degrees must be solved for, it is known that 765/360 = 2..

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What are some tips to help kids solve fractions?

Introducing fractions using real objects can also help kids learn how to solve complex questions, For example, if there are 10 apples total, and one person has three and the other has five, it's simple to figure out that together he has eight apples. Expressed as a fraction, this is 3/10 + 5/10 = 8/10, and it teaches kids that adding fractions with the same denominators (in this case, all 10 apples) simply requires adding the numerators.\nFor more complicated math, such as questions where the denominator is different, using real objects can also help. If one pizza is cut into six slices a..

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What is a system of equations?

Systems of equations can be used to represent the abstract language in word problems, making them easier to solve to the average math student. The defining characteristic is that all equations in the system share the same variables, which must logically represent the same value or values between equations.\nSystems of equations can be solved by the substitution and combination methods. This involves adding the terms of the equations after multiplying them so that one set of terms cancels out. For example, 3x + 6y = 9 and -3x + 4y = 11 simplifies to 10y = 20, leaving y as 2. Then substituting 2..

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What does "tangent to the x axis" mean?

The tangent of a circle always forms a 90 degree, or right angle, with the radius of the circle at that point. This tangent line is a geometric concept and should not be confused with the tangent of an angle from trigonometry. In trigonometry, the tangent, abbreviated tan, is the ratio of the sides of a triangle that are opposite and adjacent to a specific angle.\nThe tangent line is also an important concept in calculus. The first derivative in calculus is the slope of the tangent line at a specific point. This slope represents the instantaneous rate of change in a graph at that point. For ex..

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How much is 49 centimeters in inches?

The centimeter is a unit of length in the International System of Units, also known as the metric system. This system is used in most places throughout the world and almost exclusively in the scientific community. The inch is a unit of length in the U.S. system of customary measurement units, used primarily in the United States and derived from the system of British imperial units.

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What are some real world applications of trigonometry?

One of the most common uses for trigonometry, or trig, is in mathematics. Linear algebra, calculus and statistics all use trig in one form or another. Trigonometry was first applied to spheres, but it wasn't long before mathematicians discovered it worked even better with planes.Trigonometry plays an important role in physics. Statics and optics are some of the earliest forms of physics that rely heavily on trig, but since trigonometry helps in understanding space, all branches of physics rely on its use.More than 2,000 years ago, trigonometry tables were created to make computations for ..

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How do you add and subtract integers?

Add by moving to the right for positive numbersLocate the integer to which the number will be added on the number line. Move to the right if the number to be added is a positive number. Add by moving to the left for negative numbersIf you are adding a negative number, after locating the starting number, move to the left the required number of times.Subtract by adding the integer's oppositeWhen subtracting integers, the number to be added should be switched to its opposite before following the procedures for adding integers.

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What is the average height of a school flag pole?

Flag poles for residential use generally fall between 15 feet and 25 feet in height. This applies to flag poles mounted in-ground as opposed to those attached to buildings.The length of the flag itself depends on the length of the flag pole. The correct ratio is at least 1:4 or one quarter. This means the length of the flag should be at least one quarter the height of the pole. For example, a 20-foot pole would carry at least a 5-foot flag.

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What is the intersection of each column and row called?

Users of Microsoft's Excel spreadsheet software have many opportunities to work with cells, both individually and in groups. For example, a single cell is clicked on to select that cell, or the arrows keys are used to move to the address. To cancel cell selection, the user must click on any other cell within the spreadsheet.

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How do you multiple negative and positive numbers?

In mathematics there are a few simple rules of thumb to remember when multiplying numbers. First, the product of two positive numbers is always positive, so 3 x 2 = 6. Next, the product of two negative numbers is always positive, so -3 x -2 = 6. Finally, the product of one negative and one positive is always negative. An example of this is -3 x 2 = -6.

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