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insens350 [35]
3 years ago
6

Trigonometry

Mathematics
1 answer:
Sunny_sXe [5.5K]3 years ago
5 0

Answer:

cosx = sqrt(15)/4, -sqrt(15)/4

Step-by-step explanation:

cos²x = 1 - sin²sin x

cos²x = 1 - (1/4)²

cos²x = 15/16

cosx = sqrt(15)/4, -sqrt(15)/4

You might be interested in
Is there a difference in the number of people who have an Annual pass to Disney World comparing people who live in Florida to th
zlopas [31]

Answer:

Fail to reject the null hypothesis.

Step-by-step explanation:

People who live in Florida and also have annual pass to Disney world is 221, sample size selected for group 1 is 350.

People who do not live in Florida and have annual pass to Disney world is 365, sample size selected for Group 2 is 650.

Group 1 sample proportion is : 221 / 350 = 0.6314

Group 2 sample proportion is 365 / 650 = 0.5615

Test statistics is 0.8317

Since test stats value is greater than the sample proportion significance level, we fail to reject the null hypothesis.

6 0
3 years ago
The parallelogram shown below has an area of 35 units2.
sleet_krkn [62]
The height is 5 becuase if the area is 35 that means the length is 7 so you would divide and get 5
6 0
3 years ago
How do I solve 6(5 - 2x) + 12 = -66?
ladessa [460]

Answer:

x = 9

Step-by-step explanation:

Step 1: Write equation

6(5 - 2x) + 12 = -66

Step 2: Solve for <em>x</em>

  1. Distribute 6: 30 - 12x + 12 = -66
  2. Combine like terms: 42 - 12x = -66
  3. Subtract 42 on both sides: -12x = -108
  4. Divide both sides by -12: x = 9

Step 3: Check

<em>Plug in x to verify it's a solution.</em>

6(5 - 2(9)) + 12 = -66

6(5 - 18) + 12 = -66

6(-13) + 12 = -66

-78 + 12 = -66

-66 = -66

5 0
3 years ago
Read 2 more answers
What is the solution of 5 = t/2 -3?
Sladkaya [172]

Answer:

t=16

Step-by-step explanation:

you have to change the numbers to get just the variable.

we start from -3.

5=t/2-3

8=t/2

(we multiply by 2 instead of dividing)

8×2=16

t=16

5 0
3 years ago
HELP HOW DO YOU WORK THIS OUT!!
Harrizon [31]

Answer:

I believe it would be 4/6

Step-by-step explanation:

You have four different ways to get a sum of 7: 1 and 6; 2 and 5; 3 and 4; or 4 and 3.

4 0
3 years ago
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