Triangle ABC is a right triangle with lengths shown. What is the decimal value of cos A? Round the answer to the nearest hundred
th if necessary
1 answer:
In order to solve this, you must learn the rhyme SOH-CAH-TOA
As formulas it is
S stands for sine, C stands for cosine, and T for tangent
For now you are trying to solve for cosine. The AH stands for adjacent over hypotenuse.
So find Angle A and look for the side closest to it, but not the longest side. This has a length of 22 and can be identified as the adjacent side.
Next, the one with the length of 122 can be labeled as your hypotenuse since it is the longest side of a triangle.
You can now plug the numbers in:
This comes out to .9999950472
In this case we can round to the nearest hundreth
Answer is 1.00
As formulas it is
S stands for sine, C stands for cosine, and T for tangent
For now you are trying to solve for cosine. The AH stands for adjacent over hypotenuse.
So find Angle A and look for the side closest to it, but not the longest side. This has a length of 22 and can be identified as the adjacent side.
Next, the one with the length of 122 can be labeled as your hypotenuse since it is the longest side of a triangle.
You can now plug the numbers in:
This comes out to .9999950472
In this case we can round to the nearest hundreth
Answer is 1.00
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Answer:
Hence, the relation R is a reflexive, symmetric and transitive relation.
Given :
A be the set of all lines in the plane and R is a relation on set A.
To find :
Which type of relation R on set A.
Explanation :
A relation R on a set A is called reflexive relation if every then
.
So, the relation R is a reflexive relation because a line always parallels to itself.
A relation R on a set A is called Symmetric relation if then
for all
.
So, the relation R is a symmetric relation because if a line is parallel to the line
the always the line
is parallel to the line
.
A relation R on a set A is called transitive relation if and
then
for all
.
So, the relation R is a transitive relation because if a line s parallel to the line
and the line
is parallel to the line
then the always line
is parallel to the line
.
Therefore the relation R is a reflexive, symmetric and transitive relation.