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Furkat [3]
3 years ago
13

I need help working question 8. I don't understand how to start it

Mathematics
1 answer:
Lina20 [59]3 years ago
8 0
Why don't you first try to use the cosine law to solve for an angle and then make use of the sin law to solve for the remaining angles.

Cosine law

C^2 = A^2 + B^2 - 2AB(cos C)
Solve for cos C, and then take the inverse of the trig ratio to solve for the angle.

Then set up a proportion like you have done using the sin law and solve for another angle. Knowing the sum of all angles in a triangle add up to 180 degrees, we can easily solve for the remaining angle.
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6/2(1+2)help me with math problem
Temka [501]
\frac{6}{2}(1+2)=3(1+2)=3(3)=9

6 0
2 years ago
What is 30% of 50? please help
WITCHER [35]

Answer:

<h2>15</h2>

Step-by-step explanation:

<em>Method 1:</em>

p\%=\dfrac{p}{100}\\\\30\%=\dfrac{30}{100}=\dfrac{3}{10}=0.3\\\\30\%\ of\ 50\ is\\\\0.3\cdot50=15

<em>Method 2:</em>

\begin{array}{cccc}100\%&-&50&\text{divide both sides by 10}\\\\10\%&-&5&\text{multiply both sides by 3}\\\\30\%&-&15\end{array}

7 0
4 years ago
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What is the positive square root of 5
Elza [17]

Answer:

square root of 5 is 2.236

<u><em>hope it helps</em></u>

need more help go to- https://www.infoplease.com/math-science/mathematics/numbers-formulas/table-of-squares-and-square-roots

it will help you

6 0
3 years ago
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Which of the following statements about the points (-1, -3) and (1, -3) is
serg [7]
It’s B hope this helps!
8 0
3 years ago
Please Help!! Brainliest Answer! Thank you
stiks02 [169]

Answer:

A

Step-by-step explanation:

O = 26.6

P is a right angle so:

P = 90

angles PQO = 180

To determine Q: triangle total - (P + O)

180 - (90 + 26.6)

180 - 116.6 = 63.4

Q = 63.4

To determine side lengths: a^2 + b^2 = c^2

4^2 + b^2 = c^2

*Variable c is always hypotenuse*

Need more information so find either b or c through SOH, CAH, TOA

SOH: sine = opposite/hypotenuse

CAH: cos = adjacent/hypotenuse

TOA: tan = opposite/adjacent

tan26.6/1 = b/4

Cross multiply

1 × b = 4 × tan26.6

b = 4tan26.6

b = 2.003050791

b is about 2

b = PQ

PQ = 2

Plug b value into pythagorean theorm

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16 + 4 = c^2

20 = c^2

square root of 20 = square root of c^2

4.47213.... = c

c is about 4.47

c = QO

5 0
3 years ago
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