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notsponge [240]
3 years ago
6

What is the exact value of sin 170⁰ cos 55⁰ + cos 170⁰ sin 55⁰?

Mathematics
2 answers:
Ganezh [65]3 years ago
6 0

Answer:

C

Step-by-step explanation:

Zarrin [17]3 years ago
3 0

Answer:

c

Step-by-step explanation:

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Last points! :( math!!
sammy [17]
It is the second option, giving brainiest rewards you with points:)
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You and two friends visit a pizza shop. There are 15 toppings. 5 toppings are meat and the rest are vegetable. Each of you order
kozerog [31]
Its a 2.2 chance that your group orders meat toppings because the chances of probability get lower as each person chooses and multiplying all three probabilities you get 2.2
3 0
3 years ago
Read 2 more answers
PLEASE HELP FAST!!!
rewona [7]

By <em>trigonometric</em> functions and law of cosines, the value of x associated with a <em>missing</em> angle in the <em>geometric</em> system is between 7.701 and 7.856.

<h3>How to find a missing variable associated to an angle by trigonometry</h3>

In this question we have a <em>geometric</em> system that includes a <em>right</em> triangle, whose missing angle is determined by the following <em>trigonometric</em> function:

sin (7 · x + 4) = 12/14

7 · x + 4 = sin⁻¹ (12/14)

7 · x + 4 ≈ 58.997°

7 · x = 54.997°

x ≈ 7.856

In addition, the <em>geometric</em> system also includes a <em>obtuse-angle</em> triangle and that angle can be also found by the law of the cosine:

7² = 8² + 6² - 2 · (8) · (6) · cos (7 · x + 4)

17/32 = cos (7 · x + 4)

7 · x + 4 = cos⁻¹ (17/32)

7 · x + 4 ≈ 57.910°

7 · x ≈ 53.910°

x ≈ 7.701

Hence, we conclude that the value of x associated with a <em>missing</em> angle in the <em>geometric</em> system is between 7.701 and 7.856.

To learn more on triangles: brainly.com/question/25813512

#SPJ1

4 0
2 years ago
The difference of two numbers is 40. Find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.
puteri [66]

Answer:Let the two unknown numbers be x and y.

So, x-y=40 ........Equation 1

And 0.3(x)= 37.5/100 (y)

From equation 1, x=40+y

Now, multiply through by 100 in equation 2.

We have,

30x = 37.5 (y)

We can multiply through by 10 again,so that the number on the L.H.S becomes a whole number.

Therefore, we have

300x = 375 (y)

Put "x=40+y" in the equation above

That is, 300 (40+y) = 375 (y)

1200 + 300y = 375y

1200 = 375y - 300y

1200 = 75y

Divide both sides by 75 to get your y

Therefore, y =16

From equation 1, we had x= 40 + y

Therefore X = 40 + 16

X= 56

Therefore the two unknown numbers are 56 and 16 respectively.

Step-by-step explanation:

6 0
3 years ago
working together, melissa and jing can mow a lawn in 5 hours. It would take melissa 8 hours to do the job alone. What is the val
lubasha [3.4K]
Total Time = (M x K) / (M + K)
5 = (8 x K) / (8 + K)
40 + 5 K = 8K
40 = 3K
King can do the job in 13.33 Hours

King could mow (1 / 13.33) of the lawn in one hour.

8 0
3 years ago
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