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3 years ago

Pelase help me thank you

Mathematics

1 answer:

Morgarella [4.7K]3 years ago

5 0

Step-by-step explanation:

it has been awhile since ive done this.

so a line =180

so to find the other angle you simply subtract 120 from 180.

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If sin θ = 1 over 3 and tan θ < 0, what is the value of cos θ? (1 point)

Illusion [34]

$\sin\theta=\dfrac13>0$ , so

$\tan\theta=\dfrac{\sin\theta}{\cos\theta}$

Recall that

$\cos^2\theta+\sin^2\theta=1$

for all $\theta$ , and knowing that $\cos\theta$ we have

$\cos\theta=-\sqrt{1-\sin^2\theta}=-\dfrac{2\sqrt2}3$

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3 years ago

Let f(x)=7x and g(x)=7x+2−4. Which transformations are needed to transform the graph of f(x) to the graph of g(x)? Select each c

nignag [31]

Answer:

There is a vertical translation happening here:

- Up 2 units

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2 years ago

Im giving 100 Points to anyone who could solve this for me please.

myrzilka [38]

Answer:

AB = 27.2

BC = 33.5

AC = 50.4

∠A = 38°

∠ABC = 112°

Step-by-step explanation:

<u>Trigonometric ratios</u>

$\sf \sin(\theta)=\dfrac{O}{H}\quad\cos(\theta)=\dfrac{A}{H}\quad\tan(\theta)=\dfrac{O}{A}$

where:

$\theta$ is the angle
O is the side opposite the angle
A is the side adjacent the angle
H is the hypotenuse (the side opposite the right angle)

$\implies \sf \cos(30^{\circ})=\dfrac{29}{BC}$

$\implies \sf BC=\dfrac{29}{\cos(30^{\circ})}$

$\implies \sf BC=\dfrac{58\sqrt{3}}{3}=33.5\:(nearest\:tenth)$

$\implies \sf \tan(30^{\circ})=\dfrac{BD}{29}$

$\implies \sf BD=29\tan(30^{\circ})$

$\implies \sf BD=\dfrac{29\sqrt{3}}{3}$

$\implies \sf \sin(38^{\circ})=\dfrac{BD}{AB}$

$\implies \sf AB=\dfrac{\dfrac{29\sqrt{3}}{3}}{\sin(38^{\circ})}$

$\implies \sf AB=27.2\:(nearest\:tenth)$

$\implies \sf \tan(38^{\circ})=\dfrac{BD}{AD}$

$\implies \sf AD=\dfrac{\dfrac{29\sqrt{3}}{3}}{\tan(38^{\circ})}$

$\implies \sf AD=21.4\:(nearest\:tenth)$

$\implies \sf AC=AD+DC=21.4+29=50.4$

The interior angles of a triangle sum to 180°

⇒ ∠A + 52° + 90° = 180°

⇒ ∠A = 180° - 90° - 52°

⇒ ∠A = 38°

⇒ ∠ABC + 38° + 30° = 180°

⇒ ∠ABC = 180° - 38° - 30°

⇒ ∠ABC = 112°

**I have checked the measures using a graphing programme - see attached**

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2 years ago

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ArbitrLikvidat [17]

Answer:

P(NOT printed page) = 3/38

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alekssr [168]

Answer:

610cm square

Step-by-step explanation:

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3 years ago