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saul85 [17]
3 years ago
10

Tangent is positive in quadrants I and IV only.True or False

Mathematics
2 answers:
zhannawk [14.2K]3 years ago
6 0

Answer:

The statement is false

Step-by-step explanation:

we know that

tan(x)=\frac{sin(x)}{cos(x)}

The tangent function will be positive when the sine function and the cosine function have the same sign

so

In the first quadrant the tangent function is positive

In the third quadrant the tangent function is positive

so

The statement is false

bogdanovich [222]3 years ago
3 0
I believe the correct answer would be false. The tangents are positive in quadrant I and in III. A tangent in a certain quadrant is said to be positive if all 3 trigonometric function, namely sine, cosine and tangent, are positive. Hope this answers the question. Have a nice day.
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What percent of 600 is 84?
Katyanochek1 [597]
So percent is x/100 because percent means parts out of 100

600/6=100 so

84/600=what percent=x/100
84/600 divided by 6/6=14/100
the answer is 14%
7 0
3 years ago
3rd question of the day. It's 59th and the LASt question PLEASE help I'll give brainly thing
forsale [732]

Answer:

Step-by-step explanation:

Area of the specified region = Area of larger circle - Area of smaller circle

Larger circle:

r = 16 + 3 = 19 m

Area = πr²

       =π * 19 * 19

       = 361π m²

Smaller circle:

r = 16 m

Area = πr²

       =π * 16 * 16

       = 256π m²

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6 0
3 years ago
Calculate and express your answer in Decimal from 1/2×17
prohojiy [21]

Answer:

8.5

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Anyone know this one
Alecsey [184]

Answer:

Only B

Step-by-step explanation:

Did this in Khan Academy.

=> Also, there are 2 '-' symbols in the question.

In Option A, there is only 1 "-' symbol.

In Option B, there are 2 '-' symbols.

Option C says none of the above.

Since, Option B has 2 '-' symbols, it is the correct.

5 0
3 years ago
How long does it take for an investment to quadruple in value if it is invested at 11% compounded
defon

Let's assume we have $100 and an interest rate of 7%. For the $100 to quadruple it means that the future value would be $400. Thus, because we are talking about compounding daily we will set us the equation as follows:

100 * (1+1.07)x = 400

Then we will take 400 and divide it by 100 getting:

1.07X = 4

Now we have encountered a problem where we do not know exponent, so we will use logarithm to calculate such and transform our equation to: Log1.07(4)=X

Using our calculator we will find that it takes about 20.4895 days to quadruple the money invested under 7% interest rate compounded daily.

2nd: Using the same $100 but with the rate of 5.5% compounded continuously we will be using A=PERT formula

where:

P (principal) is equal to hypothetical $100

E (e) is a mathematical constant, which is approximately 2.718

R (rate) is the interest rate, in our case it is 5.5%

T (time) is the time required for money to grow

A (amount) is the final amount desired, which is 4 times larger of $100, thus $400

We have the following:

400 = 100 * e0.055t

400/100 = e0.055t

4 = e0.055t

Then we will apply natural log to both sides of the equations and get the following:

ln(4) = ln(e0.055t)

Since e is the base of ln(x) the equation simplifies to:

ln(4) = 0.055t

Using the calculator to find ln(4) we are getting:

1.38629 = 0.055t

Lastly find t

t = 1.38629/0.055

t = 25.20535202

Plug the answers back to the original equation to verify the answers.

1st part of the question answer: t = 20.4895

2nd part of the question answer: t = 25.20535202

3 0
3 years ago
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