Please explain. 100 / (-5) =
2 answers:
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Hey. Let me help you on this one.
In order for us to solve this problem easier, let's break it apart. We can also graph the triangle so we get visual of this problem.
I drew a quick graph for you to easier understand this question. As you can see, Charlie is standing below the tree 45 feet from it, and we need to find the unknown angle measure.
Let's form a SOHCAHTOA function which you have probably already learned in your Geometry course.
First of all let's identify our sides. The side opposite of the right triangle is a Hypotenuse, and the side that's 45 feet is adjacent, since it's adjacent to the unknown angle.
We know that we need to use
(Cosine) with negative power to it in order to solve this question, since we are looking for the unknown angle measure.
Let's form the function which, Hypotenuse, and Adjacent side.
Now, let's solve the left part of this function
Awesome. You will need to use your calculator for this part. Find the value of 0.45 when negative Cosine is used on it.
Awesome. Let's round this number to the closest tenth
is the rounded value we have discussed below.
Answer: 63.3 degrees is the unknown measure of the angle
In order for us to solve this problem easier, let's break it apart. We can also graph the triangle so we get visual of this problem.
I drew a quick graph for you to easier understand this question. As you can see, Charlie is standing below the tree 45 feet from it, and we need to find the unknown angle measure.
Let's form a SOHCAHTOA function which you have probably already learned in your Geometry course.
First of all let's identify our sides. The side opposite of the right triangle is a Hypotenuse, and the side that's 45 feet is adjacent, since it's adjacent to the unknown angle.
We know that we need to use
Let's form the function which
Now, let's solve the left part of this function
Awesome. You will need to use your calculator for this part. Find the value of 0.45 when negative Cosine is used on it.
Awesome. Let's round this number to the closest tenth
Answer: 63.3 degrees is the unknown measure of the angle
Answer:
We know that the ratio of length and breadth of a rectangular playground is 3:2
Then if the length is L, and the breadth is B, we have the relationship:
L = (3/2)*B
Outside this playground, we have a jogging track of 2m, then if we also consider the jogging track the length and breadth are:
L' = L + 2m
B' = B + 2m
The area is the product between the area and the breadth, then the area is:
A = B'*L'
A = (L + 2m)*(B + 2m)
And remember that L = (3/2)*B
Then we get:
A = ((3/2)*B + 2m)*(B + 2m)
And the area is 2816 m^2
Then we have:
A = ((3/2)*B + 2m)*(B + 2m) = 2816 m^2
Now we can solve the equation:
((3/2)*B + 2m)*(B + 2m) = 2816 m^2
(3/2)*B^2 + 3m*B + 2m*B + 4m^2 = 2816 m^2
(3/2)*B^2 + 5m*B = 2816 m^2 - 4m^2 = 2812m^2
Then we can write:
(3/2)*B^2 + 5m*B - 2812m^2 = 0
We can solve this if we use Bhaskara's formula:
One solution is negative, so we can discard that one, then we only take the positive:
B = (-5m + 130m)/3 = 41.67m
And L = (3/2)*B
L = (3/2)*40.7m = 62.5m
The breadth is 41.67 meters and the length is 62.5 meters.