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3 years ago

GIVING BRAINLIEST -23 points- URGENT HELP ME PLEASE!!!

Mathematics

1 answer:

lana66690 [7]3 years ago

4 0

Answer:

The answer is option c....

Mark as brainliest

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Rewrite each expression as a single fraction. (Please Reduce if possible)

Licemer1 [7]

Answer:
1/2
Step-by-step explanation:
(3/8)+(1/8)
(3+1)/(8)
(4/8)
(1/2)

4 0

3 years ago

Given that sectheta = -37/12 what is the value of cottheta for pi/2 < theta< pi?

lys-0071 [83]

Answer:

$cotg(\theta) = -\frac{12}{35}$

Step-by-step explanation:

The cotangent of theta is:

$cotg(\theta) = \frac{\cos{\theta}}{\sin{\theta}}$

For pi/2 < theta< pi

This means that the angle is in the second quadrant. In the second quadrant, the cosine is negative and the sine is positive. This means that the cotangent will be negative.

Secant:

$sec(\theta) = \frac{1}{\cos{\theta}}$

In this question

$sec(\theta) = -\frac{37}{12}$

$-\frac{37}{12} = \frac{1}{\cos{\theta}}$

Using cross multiplication

$-37\cos{\theta} = 12$

$37\cos{\theta} = -12$

$\cos{\theta} = -\frac{12}{37}$

Now we apply the following trigonometric identity:

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

$\sin{\theta}^{2} + (-\frac{12}{37})^{2} = 1$

$\sin{\theta}^{2} = 1 - (-\frac{12}{37})^{2}$

$\sin{\theta}^{2} = 1 - \frac{144}{1369}$

$\sin{\theta}^{2} = \frac{1369 - 144}{1369}$

$\sin{\theta} = \pm \sqrt{\frac{1225}{1369}}$

Since the angle is in the second quadrant, the sine is positive.

$\sin{\theta} = \frac{35}{37}$

Finally, the cotangent:

$cotg(\theta) = \frac{\cos{\theta}}{\sin{\theta}}$

$cotg(\theta) = \frac{-\frac{12}{37}}{\frac{35}{37}}$

$cotg(\theta) = -\frac{12}{35}$

4 0

4 years ago

Read 2 more answers

The circumference of a circle is 50.24 meters.

spin [16.1K]

Hey there!

We know that ,

Circumference is a circle = 2 pi r

=> 2 pi r = 50.24

=> r = 50.24/2 x 3.14

=> r = 78.8 m

But to find diameter , d = 2 x radius => 2 x 78.8 = 157.73 which is approximately 158

Option d is correct

4 0

2 years ago

Read 2 more answers

A local news broadcast reported that 13.7 % of tickets purchased from the airline are for flights to San Diego. What is wrong w

fredd [130]

Answer:

B. There is nothing wrong with the statement

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3 years ago

A regular polygon has 20 sides.

coldgirl [10]

Answer: