in order to apply the law of cosines to find the length of the side of a triangle, it is enough to know which of the following ? the area of a triangle ? The me
Mathematics
trevorhonse
Question
in order to apply the law of cosines to find the length of the side of a triangle, it is enough to know which of the following ?
the area of a triangle ?
The measure of an angle and the length of the side opposite that angle ?
the lengths of the two triangle sides and the measure of the angle between them ?
the area of a triangle ?
The measure of an angle and the length of the side opposite that angle ?
the lengths of the two triangle sides and the measure of the angle between them ?
2 Answer

1. User Answers Abu99
Third one is right.
Two sides and the angle between them.
The cosine trigonometric function is defined as:
cos(x) = adjacent/hypotenuse
I.e. the cosine of an angle (within a rightangle triangle) is equal to the ratio of the adjacent side (to the angle) to the hypotenuse, where the angle is one the two that is not the rightangle.
If you illustrate this, you can observe that the components of the cosine on a diagram are always the two sides that create the angle and therefore the angle will naturally be between these two sides.

2. User Answers thickerthanthanos
Answer: C.
the lengths of the two triangle sides and the measure of the angle between them
Stepbystep explanation:
a p e x