Trigonometry Calculators: (16) lessons

Arc Length and Area of a Sector of a Circle
Calculates the arc length of a circle and the area of the sector of a circle
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Takes a bearing and lists the steps needed to get from Point A to Point B using that bearing.

Cofunction Calculator
Calculates the cofunction of the 6 trig functions: * sin
* cos
* tan
* csc
* sec
* cot
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Complementary and Supplementary Angles
This calculator determines the complementary and supplementary angle of a given angle that you enter OR it checks to see if two angles that you enter are complementary or supplementary.
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Decimal Degree Minutes Seconds
Convertes decimal degrees to degrees, minutes, seconds or degrees, minutes seconds, to decimal degrees

Prefix Multipliers
Shows a table of prefix multipliers, designators, symbols, and values
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Pythagorean Theorem
Figures out based on user entry the missing side or missing hypotenuse of a right triangle. In addition, the calculator shows the proof of the Pythagorean Theorem and then determines by numerical evaluation if the 2 sides and hypotenuse you entered are a right triangle using the Pythagorean Theorem
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Pythagorean Theorem Trig Proofs
Shows the proof of 3 pythagorean theorem related identities using the angle θ:
Sin2(θ) + Cos2(θ) = 1
Tan2(θ) + 1 = Sec2(θ)
Sin(θ)/Cos(θ) = Tan(θ)

Reference Angle
Calculates the reference angle for a given angle. Also known as the positive acute angle.
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Sum to Product and Product to Sum Formulas
Given two angles in degrees of u and v, this determines the following:
* Sin(u) ± Sin(v)
* Cos(u) ± Cos(v)
* Sin(u)Sin(v)
* Cos(u)Cos(v)
* Sin(u)Cos(v)
* Cos(u)Sin(v)
* Sin(u + v)
* Sin(u - v)
* Cos(u + v)
* Cos(u - v)
* Tan(u + v)
* Tan(u - v)

Triangle Solver and Classify Triangles
Solves a triangle including area using the following solving methods
Side-Angle-Side (SAS) Side Angle Side
Angle-Side-Angle (ASA) Angle Side Angle
Side-Side-Angle (SSA) Side Angle Side
Side-Side-Side (SSS) Side Side Side
Area (A) is solved using Herons Formula
Law of Sines
Law of Cosines

Also classifies triangles based on sides and angles entered.

Trig Angle conversions
Converts between degrees, radians, gradians, revolutions, and quadrants.
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Trig Measurement
Given an angle θ, this calculates the following measurements:
Sin(θ) = Sine
Cos(θ) = Cosine
Tan(θ) = Tangent
Csc(θ) = Cosecant
Sec(θ) = Secant
Cot(θ) = Cotangent
Arcsin(x) = θ = Arcsine
Arccos(x) = θ = Arccosine
Arctan(x) =θ = Arctangent
Also converts between Degrees and Radians and Gradians
Coterminal Angles as well as determine if it is acute, obtuse, or right angle. For acute angles, a cofunction will be determined. Also shows the trigonometry function unit circle
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Trigonometry Relations
Calculates various trigonometry measurements (sin,cos,tan,csc,sec,cot) given other measurements that you enter.
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Unit Circle
Determines if coordinates for a unit circle are valid, or calculates a variable for unit circle coordinates
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What is a Unit Circle
This lesson walks you through what a unit circle is and how to use it
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