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loris [4]
3 years ago
7

Evaluate sec 240Á without using a calculator by using ratios in a reference triangle.

Mathematics
2 answers:
s344n2d4d5 [400]3 years ago
6 0
Sec∅ = 1/cos∅
= 1/cos(240)
= 1/cos(180 + 60)
= 1/-cos(60)
= 1/(-1/2)
= -2
balandron [24]3 years ago
6 0
<span>60=pi/3
cos 60 = 0.5
</span><span>sec 240 = 1/ cos 240
 cos 240 = cos (180+60)
cos (180+x) = -cos x
</span><span>cos (180+x) = -cos x
so
cos 240 = -cos 60
              = -0.5
</span><span> sec 240 =1/ cos 240
              = 1/(-0.5)
              = -2</span>
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Lady bird [3.3K]
Consecutive odd numbers are 2 apart

they are
x,x+2,x+4,x+6



10+2x=x+4+x+6
10+2x=2x+10
x=x
true
any consecutive odd integers will work

1,3,5,7 works
3,5,7,9 works
etc

6 0
3 years ago
Write an inequality for the graph<br> A. x &gt; -3<br> B. x &lt; -3<br> c. x &gt; -3<br> _
earnstyle [38]

Answer:

A. x > -3

Step-by-step explanation:

Well by looking at the graph we can tell that,

the line we can tell that the line goes to the right of of the number line,

Meaning x is greater than -3.

<em>Thus,</em>

<em>x > -3.</em>

<em />

<em>Hope this helps :)</em>

5 0
4 years ago
Ms. Green tells you that a right triangle has a hypotenuse of 12 and a leg of 5. She asks you to find the other leg of the trian
Anit [1.1K]

let the other leg be x cm.

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5 0
3 years ago
Read 2 more answers
How do you solve this?
liberstina [14]

Answer:

The answer is

<h2>{13}^{3}</h2>

Step-by-step explanation:

<h3>( {13})^{2}(  {13})^{ - 4} ( {13})^{5}</h3>

To solve the expression , use the rules of indices

Since the bases are the same and are multiplying we add the exponents

That's

<h3>{a}^{x}  \times  {a}^{y}  \times  {a}^{z}  =  {a}^{x + y + z}</h3>

So we have

<h3>( {13})^{2}(  {13})^{ - 4} ( {13})^{5}   =  {13}^{2 - 4 + 5}  \\  =  {13}^{ - 2 + 5}</h3>

We have the final answer as

<h3>{13}^{3}</h3>

Hope this helps you

3 0
4 years ago
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Kobotan [32]

Answer:

its D (1,8)

Step-by-step explanation:

explaintion if you go from the coordinates (6,8) and how from above the coordinates (1,5) to where the lines meet that's how you get (1,8)

3 0
3 years ago
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