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3 years ago

Can someone plz help me its easy but im stuck

Mathematics

1 answer:

OLga [1]3 years ago

3 0

Answer:

√y-2a/-b = x

Step-by-step explanation:

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Cos(−θ)=√3/3, sinθ<0

Delicious77 [7]

Answer:

$\sin\theta=-\frac{\sqrt{6}}{3}$

Step-by-step explanation:

The given trigonometric equation is $\cos(-\theta)=\frac{\sqrt{3} }{3}$ .

We can either use the Pythagorean identity or the right angle triangle to solve for $\sin\theta$ .

According to the Pythagorean identity,

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

Recall that, the cosine function is an even function, therefore

$\cos(-\theta)=\cos(\theta)$

$\Rightarrow \cos(\theta)=\frac{\sqrt{3} }{3}$ .

We substitute this value in to the above Pythagorean identity to get;

$(\frac{\sqrt{3}}{3})^2+\sin^2\theta=1$

$\Rightarrow \frac{3}{9}+\sin^2\theta=1$

$\Rightarrow \sin^2\theta=1-\frac{3}{9}$

$\Rightarrow \sin^2\theta=\frac{6}{9}$

$\Rightarrow \sin\theta=\pm \sqrt{\frac{6}{9}}$

$\Rightarrow \sin\theta=\pm \frac{\sqrt{6}}{3}$

But we were given that,

$\sin\theta\:$ , so we choose the negative value.

$\Rightarrow \sin\theta=-\frac{\sqrt{6}}{3}$

The correct answer is B

7 0

3 years ago

Plsss help meeeee 7^-8 divided by 7^-11

Andrej [43]

Answer:

i think the answer is 7^3

Step-by-step explanation:

when dividing numbers with exponents, you just subtract the smaller exponent from the larger one

pls tell me if im wrong

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Lorena deposited $2372 into an account that earns 4.5% interest which is compounded once a year. How much money will Lorena have

seraphim [82]

C
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ASAAPPP!! Which of the following exponential equations could be represented by the table below?

Ne4ueva [31]

Answer:

Option C

Step-by-step explanation:

Just took the quiz and it was right.

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Write a linear function f with the values f(-3) = 1 and f(5) = 2 <br> can someone help me please?

jekas [21]

X-8y+5=0
Step by step explanation

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2 years ago