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2 years ago

Anyone who’s good at trigonometry?

Mathematics

2 answers:

romanna [79]2 years ago

4 0

Answer:

Step-by-step explanation:

u know the sinus theorem for the area of a triangle

u can search it sinus theorem triangle

for the solution:

12.4/sin(74)=y/sin(39)

y=7.85 cm

Musya8 [376]2 years ago

3 0

Answer:

Length y is 8.12cm

Step-by-step explanation:

Use the law of sines.

$\frac{sin(a)}{A} =\frac{sin(b)}{B}$ ⇒ $\frac{sin(39)}{y} =\frac{sin(74)}{12.4}$

$y(\frac{sin(39)}{y}) =y(\frac{sin(74)}{12.4})$

$sin(39)=y(\frac{sin(74)}{12.4})$

$y=\frac{sin(39)}{sin(74)/12.4}$

$y=\frac{12.4*sin(39)}{sin(74)}$

y=8.118052433 if you don't round.

You might be interested in

Write the equation of the line that has a slope of 2 and passing through (3,-4) point

wel

Answer:

$y=2x-10$

Step-by-step explanation:

We know that the line has a slope of 2 and it passes through the point (3, -4).

So, we can use the point-slope form:

$y-y_1=m(x-x_1)$

Where m is the slope and (x₁, y₁) is a point.

So, let’s substitute 2 for m and (3, -4) for (x₁, y₁). This yields:

$y-(-4)=2(x-3)$

Solve for y. Distribute the right:

$y+4=2x-6$

Subtract 4 from both sides. Therefore, our equation is:

$y=2x-10$

4 0

3 years ago

CAN SOMEONE PLEASE HELP ASAP!?? I RLLY NEED THIS

Sindrei [870]

Answer:

109 degrees

Step-by-step explanation:

Since we can see that the line on the top, the one across the yellow box, is the main one, and that one measures 180*, so that means that we have to just subtract 180 by 71, and that will be our answer!

180-71 =109

So, the angle of the missing angle is 109 degrees.

Another proof that this is your answer is that 109 degrees is obtuse, and we can easily say that the angle here is also obtuse.

3 0

2 years ago

Why is this graph proportional?

Anastasy [175]

Answer:

The graph represents a linear function that passes through the origin.

Step-by-step explanation:

Proportional functions can be represented by $y=kx$ , where $k$ is some constant. They form a straight line that always pass through the origin (0,0). We can see all these characteristics in the graph, thus the graph is proportional.

8 0

2 years ago

7) Find the area of the shaded region:

aleksandr82 [10.1K]

Answer:

Step-by-step explanation:

The area of the biggest rectangle =

$(9x - 2)(2x + 7) = 18 {x}^{2} + 63x - 4x - 14 = 18 {x}^{2} + 59x - 14$

The area of the of the smallest rectangle inside=

$3x(x + 12) = 3 {x }^{2} + 36x$

Then the area of the shaded region =

$18 {x}^{2} + 59x - 14 - (3 {x}^{2} + 36x) = 18 {x}^{2} + 59x - 14 - 3 {x}^{2} - 36x = 15 {x}^{2} + 23x - 14$

So, we choose B.

7 0

3 years ago

The distance from Earth to the sun is about 9.3 × 10 7th power miles.

AURORKA [14]

<u>Answer:</u>

The distance from earth to sun is 387.5 times greater than distance from earth to moon.

<u>Solution:</u>

Given, the distance from Earth to the sun is about $9.3 \times 10^{7} \mathrm{miles}$

The distance from Earth to the Moon is about $2.4 \times 10^{5} \mathrm{miles}$

We have to find how many times greater is the distance from Earth to the Sun than Earth to the Moon?

For that, we just have to divide the distance between earth and sun with distance between earth to moon.

Let the factor by which distance is greater be d.

$\text { Now, } \mathrm{d}=\frac{\text { distance between sun and earth }}{\text { distance between moon and earth }}=\frac{9.3 \times 10^{7}}{2.4 \times 10^{5}}=\frac{9.3}{2.4} \times 10^{7-5}\\\\=3.875 \times 10^{2}=387.5$

Hence, the distance from earth to sun is 387.5 times greater than distance from earth to moon.

5 0

2 years ago