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mamaluj [8]
3 years ago
15

Find the following trig functions using their reference angles. 13) sin 135°

Mathematics
2 answers:
xenn [34]3 years ago
7 0

Answer:

sin135° = \frac{1}{\sqrt{2} }

Step-by-step explanation:

135° is in the second quadrant where sin x ° > 0

sin135°

= sin(180 - 135)°

= sin45°

= \frac{1}{\sqrt{2} } = \frac{\sqrt{2} }{2} ← exact value

Citrus2011 [14]3 years ago
3 0

Answer:

Well, I guess you could use a special representation of the function through a sum of terms, also known as Taylor Series.

It is, basically, what happens in your pocket calculator when you evaluate, for example,  

sin

(

30

°

)

.

Your calculator does this:

sin

(

θ

)

=

θ

−

θ

3

3

!

+

θ

5

5

!

−

...

where  

θ

must be in RADIANS.

In theory you should add infinite terms but, depending upon the accuracy required, you can normally stop at three terms.

In our case we have:  

θ

=

π

6

=

3.14

6

=

0.523

and:

sin

(

π

6

)

=

sin

(

0.523

)

=

0.523

−

0.024

+

3.26

⋅

10

−

4

−

...

=

0.499

≈

0.5

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Calculate the ratio of ab to ac and the ratio of ad to dc . round your answers to the hundredths place. what do you notice about
yanalaym [24]

The ratio of AB to AC and the ratio of AD to DC is 1 : 2 each respectively. They are equivalent ratios.

<h3>Ratios and proportions</h3><h3 />

A ratio means a comparison of two different quantities while proportion is an equality of two ratios.

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3 0
2 years ago
PLZ TRANSLATE AND SOLVE:
taurus [48]
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then x needs increased by 3 before being added to 6

times (multiply)

the difference of 2 and x

all this = 4


4 0
3 years ago
Help I'm justing learning about this and I don't know what to start or do​
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