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riadik2000 [5.3K]
3 years ago
7

Applying the Laws of Sines and Cosines

Mathematics
1 answer:
Naddika [18.5K]3 years ago
4 0
Essentially, you would take the formula for the laws of sines and cosines: a^2=b^2+c^2-2bc(Cos(theta)). a is the unknown side you are solving for and theta is the opposite angle to a. Since the angle opposite to R is supplementary to the 50 degree angle, 180-50=130. b could be assigned to either of the given sides; the same goes for c (e.g. b=40 and c=38). Thus, the question should be straightforward in plugging in quantities and solving for the resultant force. 
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The original price of a measuring tape is $4.30. How much will Hector pay if he buys it during the sale?
Murrr4er [49]

Answer:

how much percent is off?

Step-by-step explanation:

8 0
2 years ago
Hey can you please help me with 8 and 10 :)
insens350 [35]
8) So remember the sum of all angles inside a triangle is equal to 180°. We first want to figure out the angle below the 110°.

A straight line is 180° so if we do 180 - 110 we get 70° therefore the angle below the 110° is 70°.

So we now know two angles in the triangle, 70° and 80°. Add these and we get 150°. Now we can determine the final angle (the one labelled (2x - 6)) which will be 30°.

So let’s make it into an equation:

2x - 6 = 30

Add 6 to both sides to isolate 2x:

2x = 36

Divide by 2 to get the value of x:

x = 18



10) Since the sum of all angles in a triangle is 180, and there are only 3 angles, we can determine A easily.

B = 10°
C = 160°

So to determine A:

180 - 160 - 10

Which gives us 10

Therefore A = 10°.


So the answers:

8) x = 18
9) A = 10°


I hope this helps you!!
4 0
2 years ago
Find the difference.
sergeinik [125]
The difference is 4hrs because 6-2 is 4
3 0
2 years ago
The length of a rectangle is 5/2 units greater than twice its width. If its width is w, which expression gives the perimeter of
vekshin1

Width = w

Length = 2w + 5/2

Perimeter = 2(Length + Width)

Perimeter = 2( w + 2w + 5/2)

Perimeter = 2(3w + 5/2)

Perimeter = 6w + 5

-----------------------------------------------------

Answer: The perimeter is 6w + 5 (Answer D)

-----------------------------------------------------

6 0
2 years ago
Read 2 more answers
What is the x and y intercept of -1/2x+3?
slavikrds [6]

Answer:

-1/2x+3=y

to find xint make y=0

-1/2x+3=0

-1/2×=-3

x=6

so xint=6

to find yint make x=0

-1/2(0)+3=y

y=3

yint=3

3 0
3 years ago
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