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Pani-rosa [81]
3 years ago
7

Find the cotangent of both angle A and angle B.

Mathematics
2 answers:
gulaghasi [49]3 years ago
6 0

Answer:

\text{cot}(A)=\frac{12}{5}

\text{cot}(B)=\frac{5}{12}

Step-by-step explanation:

We have been given a right triangle. We are asked to find the cotangent of both angle A and angle B.

We know that cotangent relates the adjacent of right triangle to opposite side of right triangle.

\text{cot}=\frac{\text{Adjacent}}{\text{Opposite}}

\text{cot}(A)=\frac{24}{10}

\text{cot}(A)=\frac{12}{5}

Therefore, cotangent of angle A is \frac{12}{5}.

\text{cot}(B)=\frac{10}{24}

\text{cot}(B)=\frac{5}{12}

Therefore, cotangent of angle B is \frac{5}{12}.

Darya [45]3 years ago
3 0
Cotangent  = adjacent / opposite side

For < A its  24/10  = 2.4
For < B its  10/24  or  0.4167  to  4 dec places
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The length of the brace required is 4.3m

What is sine rule?

In a ΔABC a, b and c are the sides and A, B and C are angles then,

\frac{a}{SinA}=\frac{b}{sinB}=\frac{c}{sinC}

We can find the length, l as shown below:

Let AB=3m, BC=2m and AC=l

Let ∠A=25°

So, in ΔABC

\frac{BC}{sinA}=\frac{AB}{sinC}=\frac{AC}{SinB}

\frac{BC}{sinA}=\frac{AB}{sinC}

\frac{2}{sin25}=\frac{3}{sinC}

\angle{C}=sin^{-1}(\frac{3\times sin25}{2} )

∠C=39.34°

∠A+∠B+∠C=180°

∠B=180°-25°-39.34°

∠B=115.66°

\frac{BC}{sinA}=\frac{AC}{SinB}

\frac{2}{sin25}=\frac{l}{sin(115.66)}

l=\frac{2\times sin(115.66)}{sin25}

l=4.2659

Rounding to nearest tenth of meter.

l=4.3m

Hence, the length of the brace required is 4.3m

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8 0
2 years ago
Finds the slope of the line
Zinaida [17]

Answer:

4

Step-by-step explanation:

Slope=rise over run.

From bottom marked point (-3, -3) to the other (-2, 1)...

Rise= 4

Run= 1

4/1=4

Therefore, the slope is 4.

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6 0
3 years ago
What is the difference? 4/3 - 7/9 a. - 1/2 b. -1/3 c. 5/9 d 11/12
ANTONII [103]

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5 0
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GREYUIT [131]

Answer:

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General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

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  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

2⁴ · 5

<u>Step 2: Evaluate</u>

  1. Exponents:                                                                                                        16 · 5
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According to the Guinness Book of World Records, a woman from Russia, Mrs. Vassilyeva, had 69 children between the years 1725 to
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Desired outcomes:

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She has 4 sets of quadruplets.

So D = 4

Total outcomes:

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7 sets of triplets and 4 sets of quadruplets.

So T = 7 + 4 = 11

Probability:

p = \frac{D}{T} = \frac{4}{11} = 0.3636

36.36% probability that she gave birth to quadruplets

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