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shepuryov [24]
3 years ago
15

What is the answer -1 + 9=

Mathematics
2 answers:
hichkok12 [17]3 years ago
7 0
1+9=10 that's the answer
sukhopar [10]3 years ago
3 0
The answer to this question is 8
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In a given right triangle, If 0 º < x < 90 º and cos x = √ 3 / 2, then sin x = ?
nordsb [41]

Answer:

  1/2

Step-by-step explanation:

The "Pythagorean relation" between trig functions can be used to find the sine.

<h3>Pythagorean relation</h3>

The relation between sine and cosine is the identity ...

  sin(x)² +cos(x)² = 1

This can be solved for sin(x) in terms of cos(x):

  sin(x) = √(1 -cos(x)²)

<h3>Application</h3>

For the present case, using the given cosine value, we find ...

  sin(x) = √(1 -(√3/2)²) = √(1 -3/4) = √(1/4)

  sin(x) = 1/2

__

<em>Additional comment</em>

The sine and cosine of an angle are the y and x coordinates (respectively) of the corresponding point on the unit circle. The right triangle with these legs will satisfy the Pythagorean theorem with ...

  sin(x)² + cos(x)² = 1 . . . . . . where 1 is the hypotenuse (radius of unit circle)

A calculator can always be used to verify the result.

6 0
1 year ago
HELP ASAP!!!!!!!!!!!!WILL MARK BRAINLIEST!!!!!!! THANK YOU&lt;3&lt;3
Leto [7]

Answer:

x= 3/5

Step-by-step explanation:

SOH-CAH-TOA

You have the adjacent and hypotenuse so you will use Cosine

cos=adj/hyp

adj=3

hyp=5

3/5 = cos (or theta)

5 0
3 years ago
Solve |x – 4| + 6 = 17.
const2013 [10]

Answer:

\mathrm{C)\:}x=15,\:-7

Step-by-step explanation:

For |a-b|=c, there are two possible cases:

\begin{cases}a-b=c\\a-b=-c\\\end{cases}

Solving for both cases, we get:

\begin{cases}x-4+6=17, \:x+2=17, \: \fbox{$x=15$}\\-(x-4)+6=17,\: -x+10=17, \: -x=7, \:, \fbox{$x=-7$}\\\end{cases}

6 0
3 years ago
Help me right now like now
Reika [66]

Answer:

2. trust me.. i did it before.

4 0
3 years ago
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14<br> Pencils are sold for $3.84 per dozen. Find the cost of 15 pencils.<br> SHOW HINT
masha68 [24]

Answer:

the answer is ############

Step-by-step explanation:

7 0
3 years ago
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