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Ierofanga [76]
3 years ago
8

Find the exact value of cos210 using the unit circle

Mathematics
1 answer:
Eduardwww [97]3 years ago
3 0
Cos 210° = cos ( 180° + 30° ) - cos 30° = - √3/2
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Please explain your answer
MariettaO [177]

Answer:

e = -1/2

Step-by-step explanation:

4/3 = -6e - 5/3

transfer -6e to the right

4/3 = -5/3 -6e

Find the LCM of 3,3and 1

and their LCM is 3. So, divide all through by 3

3(4/3) = 3(-5/3) - 6e × 3

4 = -5 -18e

combine

4 + 5 = -18e

9 = -18e

divide by -18

9/ -18 = -18e/ -18

-1/2 = e

e = -1/2


5 0
3 years ago
Helppppp meehhehhhhhhhh
kiruha [24]

ANSWER

B. 10

EXPLANATION

We need to find the value of x first.

It was given that the perimeter of triangle XYZ is 24.

This means that:

XY+YZ+XZ=24

we substitute the expression in terms of x to get;

(5x - 1) + (13 - x) = 24

This implies that

5x - x = 24 - 13 + 1

4x = 12

Divide both sides by 4 to get;

x = 3

|WY|=|ZX|=13-3=10

6 0
3 years ago
Read 2 more answers
The marine life store would like to set up fish tanks that contain equal numbers of angel fish , sword tales , and guppies. what
Shalnov [3]
How do people......I just don't understand this
7 0
3 years ago
In a sale, a shop reduces all its prices by 10%.
stepladder [879]

Answer:

The phone roughly cost 302 dollars

Step-by-step explanation:

10% of 432=43.2

20% of 432=86.4

432-129.6=302.4

3 0
2 years ago
a six sided number cube has faces with the numbers 1 through 6 marked on them. what is the probability that a number less than 3
mars1129 [50]

Answer:

  • 1/3

Step-by-step explanation:

Total outcomes

  • 1, 2, 3, 4, 5, 6 - six

Favorable outcomes

  • 1, 2 - two

Probability

  • P( < 3) = favorable outcomes / total outcomes = 2/6 = 1/3
6 0
2 years ago
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