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3 years ago

15

Help mee pleaseeeeee

1 answer:

Luden [163]3 years ago

4 0

Answer:

Option 1

Step-by-step explanation:

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Simplify the expression 1/√(1-cos^2 x) . Remember cos x= 1/csc x

Cerrena [4.2K]

First, we are going to use the Pythagorean identity: $sin^2(x)+cos^2(x)=1$ to rewrite our expression. Solving for $sin^2(x)$ in our Pythagorean identity we get that $sin^2(x)=1-cos^2(x)$ , so we can rewrite our expression as follows:
$\frac{1}{ \sqrt{1-cos^2(x)} } = \frac{1}{ \sqrt{sin^2(x)} } = \frac{1}{sin(x)}$

Next, we are going to use the trig identity: $csc(x)= \frac{1}{sin(x)}$ to completely simplify our expression:
$\frac{1}{sin(x)} =csc(x)$

We can conclude that $\frac{1}{ \sqrt{1-cos^2(x)} }=csc(x)$

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3 years ago

What is the third term of the sequence?<br> a1 = k<br> an = 2a n-1?

densk [106]

Answer:

24

Step-by-step explanation:

the answer is 24 I think

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3 years ago

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The formula I = PRT where I = Interest, P = principal, R = rate, and T = time is used to calculate the amount of simple interest

Marta_Voda [28]

Answer:

T= I divided by the quantity P times R

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3 years ago

How do you solve for X?

andriy [413]

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Find the length of AB given that DB is a median of the triangle AC is 46

slava [35]

ANSWER:

The value of AB is 23

STEP-BY-STEP EXPLANATION:

We know that AB is part of AC, and that DB cuts into two equal parts (half) since it is a median, therefore the value of AB would be

$\begin{gathered} AB=\frac{AC}{2} \\ AB=\frac{46}{2} \\ AB=23 \end{gathered}$

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1 year ago