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expeople1 [14]
2 years ago
15

Evaluate the expression cos(30°)=

Mathematics
2 answers:
Ganezh [65]2 years ago
7 0

Step-by-step explanation:

cos 30° is √3 /2

Also refer to the image attached

<h2><em><u>MARK ME AS BRAINLIST</u></em> </h2>

alina1380 [7]2 years ago
3 0

Answer:

cos (30) =\sqrt{\frac{3}{2} } =0.8660

Step-by-step explanation:

By using the cos square identity in trigonometry i.e., cos2ϴ = 1 – sin2 ϴ, we can evaluate the exact value of cos(33 ). For calculating the exact value of cos(∏/6), we have to substitute the value of sin(30°) in the same formula.

cos(30°) = √1 – sin230°

The value of sin30° is 1/2 (Trigonometric Ratios)

cos(30°) = √1 – (1/2)2

cos(30°) = √1 – (1/4)

cos(30°) = √(1 * 4 – 1)/4

cos(30°) = √(4 – 1)/4

cos(30°) = √3/4

Therefore, cos(30°) = √3/2

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Answer:

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3 0
3 years ago
What is the length of line segment KJ?
Karolina [17]

Please consider the attached file.

We can see that triangle JKM is a right triangle, with right angle at M. Segment KM is 6 units and segment MJ is 3 units. We can also see that KJ is hypotenuse of right triangle.

We will use Pythagoras theorem to solve for KJ as:

KJ^2=KM^2+MJ^2

KJ^2=6^2+3^2

KJ^2=36+9

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Now we will take positive square root on both sides:

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5 0
3 years ago
Y = 6x - 4<br> y = -x + 3
likoan [24]

Answer:

  (1, 2)

Step-by-step explanation:

Subtract the second equation from the first:

  (y) -(y) = (6x -4) -(-x +3)

  0 = 7x -7 . . . . .  simplify

  0 = x - 1 . . . . . . divide by 7

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The solution is (x, y) = (1, 2).

4 0
3 years ago
If n = 37 cm and l = 12 cm, what is the length of m?
emmainna [20.7K]

<em> would say that the answer is </em><em>A. 25 cm</em><em> only because 37-12=25 and I don't necessarily know what the question is trying to ask.</em>

<em>Hope this Helps!<3</em>

6 0
3 years ago
Read 2 more answers
WILL MARK BRAINLIEST
Aneli [31]

Answer:

Table #4, with the r and the s

Step-by-step explanation:

It shows some kind of pattern

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2 years ago
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