Unlike traditional desktop calculator, SpeedCrunch is easier to use. You just type the expression that you want to calculate and press Enter. You can also paste the expression from the clipboard, that you copied from somewhere else.
Plane Geometry
The mathematical study of geometric figures whose parts lie in the same plane, such as lines, square, circle, triangle, rectangle, pentagon, polygon.
Square Information and Reference
A quadrilateral is a 2-dimensional closed shape with four straight sides. A Square is a quadrilateral with opposite sides parallel and all sides are equal in length and all angles are equal to 90°.
A rhombus is a four-sided shape where all sides have equal length. Opposite sides are parallel and opposite angles are equal. Also the diagonals (dashed lines in the figure) of a rhombus bisect each other at right angles.
a trapezoid is a quadrilateral with only one pair of opposite sides parallel and the parallel sides are called bases and the nonparallel sides are called legs.
The right triangle has one 90 degree angle and two acute . . . (< 90 degree) angles. The sum of the angles of a triangle is always 180 degrees. The two sides of the triangle that are by the right angle are called the legs... and the side opposite of the right angle is called the hypotenuse.
Side b = base; Side a = height
In the equilateral triangle, all the sides are the same length (congruent) and all the angles are the same size (congruent).
The isosceles triangle has two sides that are the same length (congruent) and two angles that are the same size (congruent).
Kite Information and Reference
In geometry (a quadrilateral is a polygon with four sides (or 'edges') and four vertices or corners). A kite is a quadrilateral with two pairs of adjacent, congruent sides.
To find the area of a kite, multiply the lengths of the two diagonals and divide by 2. To find the perimeter of a kite, just add half the lengths of the sides and multiply by 2.
A circle - A plane curve everywhere equidistant from a given fixed point, the center.
In Speed Crunch Beside standard algebraic operator like + (addition), - (subtraction), * (multiplication), / (division), ^ or ** (exponentiation), there is support for some functions, for example sin, log, abs, and many more. You do not need to memorize function names, use Ctrl+F to pop up a dialog where you can choose the function that you need (more than 50 built-in math functions).
Pentagon Information and Reference
A Pentagon is a five-sided polygon. The sum of the angles of a pentagon is 540 degrees. The angles in the center are 72 degrees (360/5) = 72
N = number of sides
S = side length
Area aprox. = S² * 1.720477401
or Area = S²N / (4tan(π/N))
Polygon Information and Reference
Using an Octagon as example:
Polygon area formula:
A= (S ² * N)/(4 * tan (π/N))
Where:
S= side length
N= number of sides
In Speed Crunch If you want to recall again the expression which you typed before, then press up and down arrow to access the expression history. Moreover, your expression history (maximum last 100 expressions) is saved between sessions. This means you can still invoke those calculations you have done yesterday or last week.
Maxima software is useful for manipulation of symbolic and numerical expressions, ordinary differential equations, polynomials, lists, systems of linear equations and sets.
Contents: Addition; Subtraction; The use of Double Signs and Brackets; Multiplication; Division; Simple Equations; The Lowest Common Multiple; Fractions; Quadratic Equations; Simultaneous Equations; Exponential Notation.
an introduction to algebraic concepts for the high school student. Topics include: Equations and Functions, Real Numbers, Equations of Lines, Solving Systems of Equations and Quadratic Equations.
Plane Geometry Formulas. Rectangle: Square: Perimeter: P = 2L + 2W ... Perimeter: add the lengths of all sides. Circumference: C = 2. ? r. Area: A = 2H. B. Area: A ...
This book is a textbook for the course of foundations of geometry. It is addressed to mathematics students in Universities and to High School students for deeper learning the elementary geometry.
For a generation this was the leading textbook on the subject of plane geometry in America. Topics covered: rectilinear figures, the circle, proportion, similar polygons, areas of polygons, regular polygons and circles, etc.
Free Math Help.com - Homework Help on Arithmetic, Pre-Algebra, Beginning Algebra, Intermediate/Advanced Algebra, Geometry and Trig, Calculus, Probability/Statistics.
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electric-motor-and-overcurrent
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online electrical calculators
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Motor calculation steps
http://www.harlingen.tstc.edu/mt/Documents/Motor_Calculations.PDF
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Branch-Circuit, Feeder and Service Calculations
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* * ElectriCalc Pro Electrical Calculator
http://www.contractor-books.com/CI/ElectriCalc_Pro.htm
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Free Online Calculators for Engineers - Electrical, Mechanical, Electronics
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