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HOW TO USE THE SINES CALCULATOR?
Sines calculator is a really nice calculator and this will help you a lot. This tool is a web-based tool that can be used from anywhere. This calculator works on every device, you can use this tool on a desktop and even on a smartphone. This tool is made for students and any individual who want to use this tool.
Anyone from anywhere can use this tool and this tool can be used from anywhere around the whole world. This tool is really quick that can help your problem really quick. Even if you don’t know about this tool you can use this tool and it will solve your problem so you just have to input the number here and you will be good to go.
Or you can have the knowledge about it from our little small Article.
what is Sines?
The law of sines states that the proportion between the length of a side of a triangle to the sine of the opposite angle is equal for each side:
a / sin(α) = b / sin(β) = c / sin(γ)
This ratio is also equal to the diameter of the triangle’s circumcircle (circle circumscribed on this triangle).
Note that you can use this law for any triangle, also for one that isn’t a right triangle.
Law of sines application
You can transform the law of sines formulas to solve some problems of triangulation (solving a triangle). You can use them to find:
- The remaining sides of a triangle, knowing two angles and one side.
- The third side of a triangle, knowing two sides and one of the non-enclosed angles. In some cases (ambiguous cases) there may be two solutions to the same triangle. If the following conditions are fulfilled, your triangle may be an ambiguous case:
- You only know the angle α and sides a and c;
- Angle α is acute (α < 90°);
- a is shorter than c (a < c);
- a is longer than the altitude h from angle β, where h = c * sin(α) (a > c * sin(α)).
You can also combine these equations with the law of cosines to solve all other problems involving triangles.
How to use the sines calculator?
To use this tool you don’t have to worry too much about this. It’s really a simple calculator and this tool is really easy to use. It also has a very simple interface. And to use this tool you just have to follow some steps that’s all you have to do.
So to use this tool you just have to follow some very simple steps and that’s all you have to do to use this tool.
Now as you can see on your desktop you have this tool that can be really nice and in this tool, you have some boxes where you can fill out the value of your problem.
Please enter your value in the text box and also cross-check it so that you won’t get the wrong answer.
After that, you just have to simply click on the calculate button which is below the text box so that you will get the answer.
Tips: you should bookmark this tool so that you can use it later and you don’t even have to search for this tool again.
An online law of sines calculator allows you to find the unknown angles and lengths of sides of a triangle. When we dealing with simple and complex trigonometry sin(x) functions, this calculator uses the law of sines formula that helps to find missing sides and angles of a triangle.
So, read on to get a complete guide about sine laws.
What is the Law of Sines?
The Laws of sines are the relationship between the angles and sides of a triangle which is defined as the ratio of the length of the side of a triangle to the sine of the opposite angle.
Where:
Sides of Triangle:
a=sidea,b=sideb,c=sideca=sidea,b=sideb,c=sidec
Angles of Triangle:
A=angleA,B=angleB,C=angleCA=angleA,B=angleB,C=angleC
Characteristics of Triangle:
P = Triangle perimeter, s = semi-perimeter, K = area, r = radius of inscribed circle, R = radius of circumscribed circle
If a, b, and c are the length of sides of a triangle and opposite angles are A, B, and C respectively; then law of sins shows:
a/sinA=b/sinB=c/sinCa/sinA=b/sinB=c/sinC
So, the law of sine calculator can be used to find various angles and sides of a triangle.
Example:
Compute the length of sides b and c of the triangle shown below.
Solution:
Here, calculate the length of the sides, therefore, use the law of sines in the form of
asinA=bsinBasinA=bsinB
Now,
asin1000=12sin500asin1000=12sin500
By Cross multiply:
12sin1000=asin50012sin1000=asin500
Both sides divide by sin 500500
a=(12sin1000)sin500a=(12sin1000)sin500
From the calculator we get:
a=15.427a=15.427
So, the length of sides b and c is 15.427mm15.427mm.
However, an Online Sine Calculator will calculate the sine trigonometric function for the given angle in degree, radian, or the π radians.
Equations Derived from Law of Sines for Angles A, B, and C:
These are some equations that are used by the law of sines calculator which are obtained from the law of sins:
A=sin−1[asinBb]A=sin−1[asinBb]
A=sin−1[asinCc]A=sin−1[asinCc]
B=sin−1[bsinAa]B=sin−1[bsinAa]
B=sin−1[bsinCc]B=sin−1[bsinCc]
C=sin−1[csinAa]C=sin−1[csinAa]
C=sin−1[csinBb]C=sin−1[csinBb]
Derived Equations from Law of Sines Solving for Sides a, b, and c:
In order to find any side of a triangle law of sines calculator fetched some values from law of sines formula:
a=bsinAsinBa=bsinAsinB
a=csinAsinCa=csinAsinC
b=asinBsinAb=asinBsinA
b=csinBsinCb=csinBsinC
c=asinCsinAc=asinCsinA
c=bsinCsinBc=bsinCsinB
Also, you can find alpha (α) by using, a=n/a,b=n/a,beta(β)=n/aa=n/a,b=n/a,beta(β)=n/a values, while the value of beta is calculated by using a=n/a,alpha=n/a,b=n/aa=n/a,alpha=n/a,b=n/a.
Ambiguous Case Law of Sines:
An ambiguous case occurs, when two different triangles constructed from given data then the triangles are ABC andAB′C′ABC andAB′C′.
There are some conditions to use the law of sines for the case to be ambiguous:
- When only sin(a)sin(b) and an angle A given.
- The angle of A is less than 900900.
- Side a is shorter as compared to side c.
- Side a is longer than altitude h from the angle B where a > h.
Furthermore, The online CSC Calculator will determine the cosecant and sin inverse trigonometric function for the given angle it either in degree, radian, or the pi (π) radians.
How Law of Sines Calculator Works?
The law of sine calculator especially used to solve sine law related missing triangle values by following steps:
Input:
- You have to choose an option to find any angle or side of a trinagle from the drop-down list, even the calculator display the equation for the selected option
- Now, you need to add the value for angles and sides into the designated fields
- Then, you have to select the units for the entered values
- At last, make a click on the given calculate button
Output:
The law of sines calculator calculates:
- The value of angles and sides for the given equation
- The values for the different characteristics of a triangle
- Diagram
FAQ’s
When to use the Law of Sines?
When you have two sides and one angle or two angles and one side of a triangle then we use laws of sines.
What is the Main Rule for the Sides of a Triangle?
According to the triangle inequality theorem, the sum of any two sides must be greater than the third side of a triangle and this rule must fulfil all three conditions of sides.
What is Oblique Triangle in Trigonometry?
An oblique triangle is not a right triangle so basic trigonometric ratios do not apply, they can be modified to cover oblique by using sines and cosines law.
What are the Characteristics of a Triangle?
There are different ways to find triangle characteristics:
- Radius of circle around triangle R=(abc)/(4K)R=(abc)/(4K)
- Radius of inscribed circle in a triangle r=√(s−a)∗(s−b)∗(s−c)/sr=(s−a)∗(s−b)∗(s−c)/s
- Triangle area K=√s∗(s−a)∗(s−b)∗(s−c)K=s∗(s−a)∗(s−b)∗(s−c)
- Triangle semi perimeter s=0.5∗(a+b+c)s=0.5∗(a+b+c)
- Perimeter P=a+b+cP=a+b+c
End-Note:
The law of sines calculator is highly recommendable for assessing the missing values of a triangle by using the law of sines formula. Finding all these values manually is a difficult task, also it increases the risk to get accurate results. By using the law of sine calculator you can find all sine law values instantly and 100% error-free. Moreover, this tool is beneficial for people who work with the law of sine related trigonometric function.
Reference:
From the source of Wikipedia: The ambiguous case of triangle solution, Relation to the circumcircle, Relationship to the area of the triangle.
From the source of Dave’s Short Trig Course: Oblique Triangles, Pythagorean theorem, Triangle Characteristics.
From the source of Khan Academy: Laws of sines and cosines review, Solving triangles using the law of sines, Missing Angle.
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