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DanielleElmas [232]
3 years ago
10

Simplify the trigonometric expression.

Mathematics
2 answers:
ryzh [129]3 years ago
6 0
1/(1+sin theta) + 1/(1-sin theta) 

THe answer is letter D. 2 sec^2 theta

Hope it help! Goodluck! 
Natasha_Volkova [10]3 years ago
5 0
First we are going to find the common denominator of both fractions. To do that, we are going to multiply their denominators:
(1+sin \alpha )(1-sin \alpha )=1-sin^2 \alpha

Now we can rewrite our expression using the common denominator:
\frac{1-sin \alpha }{1-sin^2 \alpha } + \frac{1+sin \alpha }{1-sin^2 \alpha} = \frac{2}{1-sin^2 \alpha}

Finally, we can use the trig identities: 1-sin^2 \alpha =cos^2 \alpha and sec \alpha = \frac{1}{cos \alpha } to simplify our trig expression:
\frac{2}{cos^2\alpha}=2sec^2 \alpha

We can conclude that the correct answer is the fourth one.
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Alaska is the biggest state in the United States of America , write this as a biconditional statement
marin [14]

Answer:

Alaska is the biggest state in the United States of America , write this as a bi conditional statement

Alaska is the largest state in the united states. the state has an area of approximately 663,000 square miles. Rhode island is the smallest state in the united states, with an area of approximately 1,000 square miles. currently, the populations of Alaska and Rhode island are 732,000 people and 1 million people, respectively. if Alaska had the same number of people per square mile as Rhode island, what would its population be? in two or more sentences, explain your calculations and conclusions.

4 0
3 years ago
The solutions of x² = 16x - 28 are<br> 1) -2 and -14<br> 2) 2 and 14<br> 3) -4 and -7<br> 4) 4 and 7
Allisa [31]
2 and 14
hope this helps
6 0
3 years ago
Two workers finished a job in 12 days. How long would it take each worker to do the job by himself if one of the workers needs 1
FromTheMoon [43]

Answer:

20 days

Step-by-step explanation:

t = time required by one worker to complete the job alone

(t+8) = time required by the other worker

So:

7.5/ t + 7.5/ (t + 8) = 1

Solve for t.

...

t = 12 days, the first guy working alone

The other worker would finish the job in 20 days.

4 0
3 years ago
Read 2 more answers
PLEASE HELP FAST!
bonufazy [111]

the easiest way is to make the fractions the same, with common denominators.

that means you have to multiply (1/4) by 2, to make it 2/8.

then you can see that she can make 3 total trips, not including driving back home.

7 0
3 years ago
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The legs of a right triangle are 12 cm and 16 cm. What is the length of the hypotenuse? 15 cm 17 cm 20 cm 28 cm
GalinKa [24]
Answer: 20 cm

To solve this, use the Pythagorean Theorem, a² + b² = c², where a and b are the legs of the right triangle, and c is the hypotenuse of the right triangle.
**The Pythagorean Theorem only works for right triangles.**

Substitute in the values.
a² +  b² = c²
12² + 16² = c²

Solve for c, the hypotenuse.
12² + 16² = c²               
144 + 256 = c²
400 = c²
c = √400
c = 20

7 0
3 years ago
Read 2 more answers
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