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3 years ago

Anwser true or false

Mathematics

2 answers:

adelina 88 [10]3 years ago

7 0

He is incorrect so true.

maxonik [38]3 years ago

3 0

The first answer would be false!

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Is square root 1 minus sine squared theta = cos Θ true? If so, in which quadrants does angle Θ terminate?

Cloud [144]

Answer:

True; quadrants I & IV

Step-by-step explanation:

We know the relation between sine and cosine function which is given by

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

Let us solve this equation for cosine function.

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

Take square root both sides. When ever we take square root we need to write the solution in plus minus form

$\sqrt{\cos^2 \theta}=\pm\sqrt{1-\sin^2 \theta}$

$\cos \theta=\pm\sqrt{1-\sin^2 \theta}$

$\cos \theta=-\sqrt{1-\sin^2 \theta}, \sqrt{1-\sin^2 \theta}$

If Θ is in quadrants I and IV then the value will be positive and if Θ is in II and III quadrant then the value is negative.

Hence, if Θ is in quadrants I & IV, then we have

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

Thus, the correct option is: True; quadrants I & IV

6 0

3 years ago

Read 2 more answers

What is the sum? StartFraction 3 Over x squared minus 9 EndFraction + StartFraction 5 Over x + 3 EndFraction

Karolina [17]

Answer:

The answer is:

$\frac{5 x - 12}{(x + 3)(x - 3)}$

Step-by-step explanation:

$\frac{3}{x ^{2} - 9} + \frac{5}{x + 3}$

First, we have to make the denorminator same by multiplying:

$\frac{3}{(x + 3)(x - 3)} + \frac{5}{x + 3}$

$\frac{3}{(x + 3)(x - 3)} + \frac{5(x - 3)}{(x + 3)(x - 3)}$

Then, we can add up everything together:

$\frac{3 + 5x - 15}{(x + 3(x - 3)}$

$\frac{5x - 12}{(x + 3)(x - 3)}$

(Sorry if being messy)

8 0

3 years ago

Read 2 more answers

26cm/s=how many m/min

zepelin [54]

26 cm/s equals to 15.6 m/min

4 0

3 years ago

SOLVE THIS PROBLEM ASAP PLS

fredd [130]

Answer:

2/8 chance of landing on A

Step-by-step explanation:

4 0

3 years ago

Pleeeaaaasssse help

Mars2501 [29]

Answer:

Number of miles is either less than 8255.25 or greater than 17255.25.

Step-by-step explanation:

Given that :

Difference in mileage of the sedan and minivan is > 4500

Mikeage of minivan = 12755.25

Possible number of miles on the sedan :

Mileage on minvan ± difference in mileage ;

12755.25 ± 4500

12755.25 + 4500 = 17255.25

12755.25 - 4500 = 8255.25

This means that the possible number of miles on the sedan is either greater than 17255.25 OR less Than 8255.25

8 0

2 years ago