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zepelin [54]
3 years ago
9

How do you find a angel when you know the sides?

Mathematics
2 answers:
Solnce55 [7]3 years ago
7 0

Answer:

use The Law of Cosines first to calculate one of the angles

then use The Law of Cosines again to find another angle

and finally use angles of a triangle add to 180° to find the last angle.

cos(C) = (a2 + b2 − c2)/2ab

cos(A) = (b2 + c2 − a2)/2bc

cos(B) = (c2 + a2 − b2)/2ca

alina1380 [7]3 years ago
3 0

Answer:

Lets say its a right angle : we know that it is 90 degrees

Since  triangles are congruent to each triangle, each triangle has half as many degrees, namely 180. So this is true for any right triangle.

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Simplify the rational expression. State any restrictions on the variable.
german
<span>Simplify the rational expression. State any restrictions on the variable. 


A. t + 4; t ≠ 8 B. - t + 4; t ≠ - 8 C. t - 4; t ≠ - 8 D. - t - 4; t ≠ 8
 I think it would be C. 


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5 0
4 years ago
Read 2 more answers
Please answer my question
Alexandra [31]

Answer:

4) 0

5) 30.5 and 60.5

6) 30.5 through 80.5

Step-by-step explanation:

The box plot is split into 4 parts, the first 25% of it (1/4 of 100) is 0.

Q stands for quarter (1/4) so Q1=30.5 because of where the first dot hits, and Q3=60.5 because of where the 3rd dot hits.

The dot plot goes from 30.5 through 80.5.

I hope this makes sense and helps you!

5 0
3 years ago
The area of a rectangle is represented by the function x3 − 2x2 − 40x − 64. The width of the rectangle is x + 4. Find the expres
const2013 [10]

Answer: Length = x² - 6x - 16

Step-by-step explanation:

The formula for determining the area of a rectangle is expressed as. Area = length × width

Length = Area/width

The area of a rectangle is represented by the function

x³ - 2x² - 40x - 64. The width of the rectangle is x + 4. Therefore,

Length = (x³ - 2x² - 40x - 64)/(x + 4)

We would apply the method of long division. The steps are shown in the attached photo. From the photo,

Length = x² - 6x - 16

3 0
3 years ago
Solve for the missing sides 30-60-90 triangle show work please and thank you
Alex_Xolod [135]

Answer:

4.

x=8\sqrt{3}

y=16

5.

x=3

y=3\sqrt{3}

Step-by-step explanation:

The sides of a (30 - 60 - 90) triangle follow the following proportion,

a-a\sqrt{3}-2a

Where (a) is the side opposite the (30) degree angle, (a\sqrt{3}) is the side opposite the (60) degree angle, and (2a) is the side opposite the (90) degree angle. Apply this property for the sides to solve the two given problems,

4.

It is given that the side opposite the (30) degree angle has a measure of (8) units. One is asked to find the measure of the other two sides.

The measure of the side opposite the (60) degree side is equal to the measure of the side opposite the (30) degree angle times (\sqrt{3}). Thus the following statement can be made,

x=8\sqrt{3}

The measure of the side opposite the (90) degree angle is equal to twice the measure of the side opposite the (30) degree angle. Therefore, one can say the following,

y=16

5.

In this situation, the side opposite the (90) degree angle has a measure of (6) units. The problem asks one to find the measure of the other two sides,

The measure of the side opposite the (60) degree angle in a (30-60-90) triangle is half the hypotenuse times the square root of (3). Therefore one can state the following,

y=3\sqrt{3}

The measure of the side opposite the (30) degree angle is half the hypotenuse (the side opposite the (90) degree angle). Hence, the following conclusion can be made,

x=3

6 0
3 years ago
Can someone please answer this question please I need it right now and please answer it correctly please show work answer number
schepotkina [342]

Answer:

24) A

22) B

Step-by-step explanation:

24)

Original Price: d      

Sale: 30%    

A sale means that a value is subtracted from the original price

d - 30% = 0.7d

All options given:

A) 0.3d

B) 0.7d

C) d - 0.3d = 0.7d

D) (1.0 - 0.3)d = 0.7(d) = 0.7d

All of these options are equal to the price after the sale, except A.

A is the answer to question 24

22)  m > 0, n > 0    Use an example to represent m and n

m = 1,  n = 2 = -0.5

-0.5 is a rational, negative number

The answer to question 22 is B

Hope this helps :)

5 0
3 years ago
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