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ANEK [815]
1 year ago
15

Select all the expressions equal to sin (30°). *

Mathematics
1 answer:
SOVA2 [1]1 year ago
7 0

The trigonometric expression sin 30° will be equal to cos 60°. Then the correct option is E.

<h3>How to convert the sine of an angle to some angle of cosine?</h3>

We can use the fact that:

sin(θ) = cos(90 - θ)

To convert the sine to cosine (but the angles won't stay the same unless it's 45 degrees).

The trigonometric expression sin 30° will be equal to

The sin 30° can be written as

sin 30° = cos(90° - 30)

sin 30° = cos 60°

Then the correct option is E.

Learn more about sine to cosine conversion here:

brainly.com/question/1421592

#SPJ1

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Simplify the expression: show all ur steps/ wrk PLEASE,1+2x3-18/3+(5(2+2)]
Maurinko [17]
Ok let's do this*pops knuckles*



let's add the first side

1 + 2 \times 3 - 18
order of operations demands that we do multiplication first(P.E.M.D.A.S)

so
2 \times 3 = 6
now we can add the 1 from
1 + (6) - 18
into our six


6 + 1 = 7
now we substract

(7) - 18 =  - 11
now we have
- 11  \div 3 + (5(2 + 2))
now we focus on the
other side
3 + (5(2 + 2))
since 5 is in paranthesis we use something called the distributive property. it mean we will multiply the 5 by both of the 2.
(5(2 + 2)) = (((5 \times 2) + (5 \times 2) = 20
now we have
3  + 20 = 23

(the three is from the original equation)

now we plug in our final numbers

- 11 \div 23
or
\frac{ - 11}{23}
I hope this helps
4 0
2 years ago
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(Please help with this, I'm in the middle of a quiz)
astraxan [27]

Answer:

D)16 ft (feet)

Step-by-step explanation:

20x24=256ft

Then you square root that and get 16.

Hope this helps.

6 0
3 years ago
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sergiy2304 [10]

Answer:

Step-by-step explanation:

y = 3.25x + 1.25

1.25 is y-intercept

3.25 is the slope of a graph.

If x = 0, then y = 1.25

(0, 1.25)

If x = 3, then y = 3.25(3) + 1.25 = 11

(3, 11)

4 0
2 years ago
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Can someone solve this for me?
makkiz [27]

Answer:

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5 0
3 years ago
Which of the students found the correct value of their expression? Select all that are true. None of the students Student 2 Stud
Mariulka [41]

Answer:

Step-by-step explanation:

Student 2 and student 1

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