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pantera1 [17]
2 years ago
5

I need help finding out what x is only using the sine and cosine rule.

Mathematics
1 answer:
Natali5045456 [20]2 years ago
5 0
Angles in a triangle add up to 180 degrees.
Find all the angles in the triangles by using this info.

To use sin or cosine, you need a right triangle. Remember, cos(theta) = adj/hyp and sin(theta) = opp/hyp.
Solve for the side shared by both triangles first. From this you will get part of x and the line in the middle of the large triangle. Use this line to solve for the hypotenuse of the large triangle then use the hypotenuse to solve for the other part of x. Add both x's together to get your answer
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3) Consider the sequence -11 ; 2sin3x ; 15; ...
DiKsa [7]

9514 1404 393

Answer:

  x = 30

Step-by-step explanation:

In an arithmetic sequence, any given term is the average of the two terms that come before and after. The middle term of this sequence must be ...

  2sin(3x) = (-11 +15)/2

  sin(3x) = 1 . . . . . . . . . . simplify and divide by 2

Then the value of 3x must be 90°, so ...

  x = 90/3 = 30

There is one value of x in the interval [0, 90] that makes this sequence arithmetic: x = 30.

8 0
3 years ago
In the diagram of JML below, NK∥ML, JN=6, NM=30, and JK=7. What is the length of JL?
SpyIntel [72]

Answer:

NK

Step-by-step explanation:

8 0
2 years ago
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I need to know what is <br><img src="https://tex.z-dn.net/?f=%20-%2015%20%5Cdiv%203" id="TexFormula1" title=" - 15 \div 3" alt="
Slav-nsk [51]

The answer is -3 because mathematically -15 divided by 3 equals -3



8 0
3 years ago
Find the circumference of a circle with an area of 676pi
saveliy_v [14]

Answer:

The circumference of the circle is 52π

Step-by-step explanation:

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a = area = 676π

r = radius

a = π * r²

we clear r

r = √(a/π)

now we replace the known values

r =  √(676π/π)

r = √(676)

r = 26

now we use the formula to calculate the circumference of a circle

c = π * 2r

c = π * 2 *  26

c = 52π

The circumference of the circle is 52π

6 0
2 years ago
Read 2 more answers
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alex41 [277]

Answer:

The age of a kitten and it’s weight

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Step-by-step explanation:

8 0
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