Please can you give me an example of Law of sines and Law of cosine with answer?

vazelinahS

vazelinahS

Answered question

2021-10-29

Please can you give me an example of Law of sines and Law of cosine with answer?

Answer & Explanation

Clelioo

Clelioo

Skilled2021-10-30Added 88 answers

Step 1
Given:
Law of sines and law of cosines
Step 2
To determine:
Law of sines and law of cosines with an answer: =?
Step 3
Solution:
Law of cosines:
It is basically used to calculate the angle(or side length) measurements for triangles other
than right triangles:
Let the sides of the triangle be a, b , c and the included angle is: =α
Hence,
As per the cosines law:
c2=a2+b2(2ab)cosα
So,
Using this law we can easily find the third side;
Step 4
Now:
Law of sines:
It is basically used to find the measure of either angles or the sides of the triangles; This rule is an equation relating the lengths of the sides of the triangle to the sines of its angles; It gives the relationship between the sides and the angles of non-right triangles:
Let a, b and c be the sides of the triangle:
So,
By the law of sines:
sinAa=sinBb=sinCc
Where angles A, B and C are the different angles of the triangle.

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