1 year ago

What is the exact value of tan(−π4)? Enter your answer in the box.

Mathematics

1 answer:

kondor19780726 [428]1 year ago

4 0

Answer:

What is the exact value of tan(−π4)? is 20

You might be interested in

Joan has a stalk of celery that is 6 inches long. She cuts it into two pieces. Each piece is the same length. How long is each p

Mila [183]

3 inches
5 inches are the answers

5 0

2 years ago

Read 2 more answers

The question= find the percent of each number

RUDIKE [14]

Answer:

78 x 160 /100

= 124.8

12 x 325/100

= 39

Step-by-step explanation:

6 0

2 years ago

1000 was invested at 5.5% interest, compounded annually. After sometime the amount had grown to 1550. How long was the money inv

scZoUnD [109]

compound interest equation for annually compounded

$A=P(1+r)^t$

A=final amount

P=principal

r=rate in decimal

t=time in years

given that

A=1550

P=1000

r=5.5%=0.055

find t

$1550=1000(1+0.055)^t$

divide both sides by 1000

$1.55=1.055^t$

take ln of both sides

$ln(1.55)=ln(1.055^t)$

use ln rule $ln(a^b)=b(ln(a))$

$ln(1.55)=t(ln(1.055))$

divide both sides by ln(1.055)

$\frac{ln(1.55)}{ln(1.055)}=t$

using a calculator, we get that t=8.18544 yrs

so about 8.2yrs

4 0

2 years ago

Giselle pays $210 in advance on her account at the athletic club. Each time she uses the club, $15 is deducted from the account.

Contact [7]

Im not sure but im really pretty ure it is a

8 0

3 years ago

Read 2 more answers

Someone help me I don’t understand the circumference C=2TTr

Irina-Kira [14]

You are being asked to make π the subject in

$C=2πr \:$

So divide both sides of the equation by
$2r$

That is

$\frac{ C}{2r} = \frac{2πr}{2r}$
The you have
$\frac{ C}{2r} = \pi$

or

$\pi = \frac{ C}{2r}$

I hope this is helpful?

4 0

2 years ago