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First use the cosine rule:
If the three sides are of lengths a, b and c and C is the angle opposite side c, then
CosC = (a2 + b2 - c2)/2ab
So angle C = Cos-1[ (a2 + b2 - c2)/2ab ]
Angles A and B can be found similarly, or more simply, using the Sine rule:
SinA/a = SinB/b = SinC/c
What else can I help you with?
How do you find an angle of a right triangle?
you need to have at least 2 values of the lengths of the triangle and then you can find the angle by sine, cosine or tangent formulas you may try this online calculator for right triangles. http://www.rillocenter.com/calculate/trigonometry.html
How calculate angle in isosceles triangle?
use protractor, or divide isosceles triangle into two right triangles, and use trigonometric functions to find the angles individually (ONLY IF YOU HAVE ALL SIDE LENGTHS CAN YOU DO THIS)
How to find x in triangles with only one angle?
A triangle cannot have only one angle!
Do all hyperbolic triangles have the same angle sum?
find out your self
What traingle has a reflex angle?
No triangle can ever have a reflex angle inside it.
What are the different application of trigonometry?
Trigonometry is used to find the properties of triangles and Pythagoras' theorem is used to find the lengths and angles of right angle triangles.
In order to apply the law of cosines to find the measure of an interior angle what is enough to know?
The lengths of all three sides of the triangle APEX:)
How do you find an angle of a right triangle?
you need to have at least 2 values of the lengths of the triangle and then you can find the angle by sine, cosine or tangent formulas you may try this online calculator for right triangles. http://www.rillocenter.com/calculate/trigonometry.html
What is trigonometry used to find?
It is used to find measures of angles and lengths of sides in triangles.
How calculate angle in isosceles triangle?
use protractor, or divide isosceles triangle into two right triangles, and use trigonometric functions to find the angles individually (ONLY IF YOU HAVE ALL SIDE LENGTHS CAN YOU DO THIS)
How do you find a triangle congruent by cpctc?
A triangle if not found congruent by CPCTC as CPCTC only applies to triangles proven to be congruent. If triangle ABC is congruent to triangle DEF because they have the same side lengths (SSS) then we know Angle ABC (angle B) is congruent to Angle DEF (Angle E)
How to find x in triangles with only one angle?
A triangle cannot have only one angle!
Do all hyperbolic triangles have the same angle sum?
find out your self
How do you find area of an angle?
You cannot. The arms of an angle are of unspecified lengths and the shape is not closed so there is no finite area to find.
What are the five ways to prove a triangles congruent?
The 5 ways to prove that two triangles are congruent are to find equal: 1) side-side-side 2) side-angle-side 3) angle-side-angle 4) angle-angle-angle 5) hypotenuse-leg
Definition of law of sines?
The law of sines is used to find missing values in triangles. The formula is a/sinA=b/sinB=c/sinC. The idea behind the equation is that the larger an angle is the larger the side across from it will be and the smaller the angle the smaller the side across from it will be. Once you have set up your equation you can easily solve your equation with some simple algebra and a calculator.
How do you find the hypthoneus of the triangle?
Hypotenus is found in Right Angle triangles 90 Degrees
