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3 years ago

If cosθ=sinβ then the two angles must be

Mathematics

1 answer:

alex41 [277]3 years ago

4 0

Answer:

The answer is complementary ⇒ last answer

Step-by-step explanation:

In any right triangle there are two acute angles sum of them is 90°

∵ The two angles will be complementary if there sum is 90°

∵ cosФ = sinβ

∵ cosФ = sin(90 - Ф)

∴ β = 90 - Ф

∴ β + Ф = 90

∴ β and Ф are complementary

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You live in a big apartment. The bedroom is 15 by 20 feet. Calculate the area of your bedroom.

Natasha_Volkova [10]

Answer:

The answer is B 300 sq. ft.

Step-by-step explanation:

If you multiply 15 by 2 you were to get 30 but since it is 15 multiplied by 20 instead its like adding a 0 at the end of the number so we change 30 to 300.

Hope this helps :)

4 0

3 years ago

Read 2 more answers

I put $500 in a saving account that warns 7% interest compounded quarterly. How much will be in the account after 1 year? Rounde

Fantom [35]

$\bf ~~~~~~ \textit{Compound Interest Earned Amount}
\\\\
A=P\left(1+\frac{r}{n}\right)^{nt}
\quad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{original amount deposited}\to &\$500\\
r=rate\to 7\%\to \frac{7}{100}\to &0.07\\
n=
\begin{array}{llll}
\textit{times it compounds per year}\\
\textit{quarterly, thus four}
\end{array}\to &4\\
t=years\to &1
\end{cases}
\\\\\\
A=500\left(1+\frac{0.07}{4}\right)^{4\cdot 1}\implies A=500(1.0175)^4\implies A\approx 535.92951564$

5 0

3 years ago

Please help on this one

viva [34]

Answer:

1) 4+n

2) 3+n

3)7-4n

4) n-7

5)8n

6)4-6n

7) 9/n

8)2+n

Step-by-step explanation:

8 0

3 years ago

Evaluate each expression when a=1/3, b= 4 and c = 9

evablogger [386]

1/3·4·9=11.999999999888888888888888 or 11.9 repeating

3 0

4 years ago

I need help as soon as possible

AnnZ [28]

The correct answer is 4x10 to the 4th power

4 0

3 years ago