3 years ago

How are conversion of units and scientific notation relate to each other?

1 answer:

5 0

They both use powers

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topjm [15]

$\begin{gathered} \cos (-\frac{7\pi}{2})=\cos (\pi+\frac{\pi}{2}) \\ \cos (-\frac{7\pi}{2})=\cos (\frac{3\pi}{2}) \end{gathered}$

As we know:

$\begin{gathered} \cos (x)=0 \\ for \\ x=\pi n-\frac{\pi}{2} \\ n\in Z \end{gathered}$

For:

$\begin{gathered} n=2 \\ x=2\pi-\frac{\pi}{2}=\frac{3\pi}{2} \\ for \\ n=-3 \\ x=-3\pi-\frac{\pi}{2}=-\frac{7\pi}{2} \end{gathered}$

Therefore:

$\begin{gathered} \cos (-\frac{7\pi}{2})=0 \\ and \\ \cos (\frac{3\pi}{2})=0 \\ so\colon \\ 0=0 \\ This_{\text{ }}is_{\text{ }}true \end{gathered}$

Therefore, the statement is true

7 0

1 year ago

SIZIF [17.4K]

Answer:

i got you fam

Step-by-step explanation:

see ya

6 0

3 years ago

torisob [31]

702 is your answer trust I can be lazy too

6 0

3 years ago

Leona [35]

I would honestly say A

3 0

4 years ago

Igoryamba

I would say its d
the pentagon has no right angles or acute angles (at least thats what it looks like) so i believe it is has all obtuse angles.

8 0

4 years ago

How are conversion of units and scientific notation relate to each other?​