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vivado [14]
3 years ago
15

If B is an obtuse angle and tan 2B = 24/7 , find sin B​

Mathematics
1 answer:
pochemuha3 years ago
7 0

Answer:

B = 143.13 degrees

sin (B) = sin (143.13) = 3/5 = 0.6

Step-by-step explanation:

Obtuse angles are the ones greater than 90 degrees but smaller than 180 degrees.

They belong to the second quadrant

We first find B'

tan (2*B') = 24/7

2*B' = arctan (24/7)

B' = 0.5*arctan (24/7)

B' = 36.869

But since B is from the second quadrant, this means that

B = 180 - B' = 143.13 degrees

sin (B) = sin (143.13) = 3/5 = 0.6

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Which of the following is an equivalent form for 2x=log3(y-1)
skad [1K]

Answer:

B

Step-by-step explanation:

2x = log3 (y - 1)

y - 1 = 3^2x

y = 3^2x +  1

8 0
3 years ago
What are the zeros of 3x²(x+π)³(x-4)²
Aneli [31]
Hi again!

The zeros are the values of x. This is where the graph intersects the x - axis. In order to find the zeros, replace y with 0 and solve for x.

The answer is x = 0, -π, 4

I am not sure what grade are you or the level, but for me, they sometimes asked me to find their multiplicities as well

The multiplicity of a root is the number of times the root appears.

So, the answer are
x = 0 and the multiplicity of 2
x = -π and the multiplicity of 3
x = 4 and the multiplicity of 2

Good luck with your studies!

5 0
3 years ago
What is the value of the expression |a + b| + |c| when a = –5, b = 8, and c = –13?
nasty-shy [4]
|a+b| + |c| when a= -5, b= 8, c= -13:

|-5+ 8|+ |-13|
= |3|+ 13
= 3+ 13
= 16

The correct answer is D. 16~
7 0
4 years ago
A triangle has side lengths of 21 cm and 17 cm. What is the range of values possible for the 3rd side?
Alexxx [7]

Answer:

4 < x < 38

Step-by-step explanation:

21 - 17 = 4

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8 0
3 years ago
How is the answer 7? someone help i need this urgently <br>​
Blizzard [7]

     The 20 represents the specific section, the 8 adds onto that side making the full side 8.

-> See attached

Using this, we can set up a proportion to solve;

     <em>Sides of the smaller triangle are on the top, and sides of the larger triangle are on the bottom</em>

[Proportion we made]

\frac{20}{28}=\frac{5}{x}

[Cross-multiply]

20x = 140

[Divide both sides of the equation by 20]

x = 7 ✓

This is how they reached 7, I hope this answer explains it so you can understand.

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.

- Heather

8 0
3 years ago
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