Question

HELPP!!
Select the correct answer.
What is the value of arcsin ?

Answer 1

Choice B

Explanation:

An option is to find the the square root of 2 in decimals is
`(1.414213562)/(2) ≈ <strong>0.7071067812</strong>`

Now we can use the arc sine, which is the inverse of a sin.

To do this we must use a scientific calculator. By pressing the arc sin button and entering in 0.7071067812, we can find the arc sin, which is 45°.

Answer 2

For this case we have that by definition, it is called arcsine (arcsin) from a number to the angle that has that number as its sine.

We must find the
`arcsin (\frac {\sqrt {2}} {2})`. Then, we look for the angle whose sine is
`\frac {\sqrt {2}} {2}`.

We have to, by definition:

`Sin (45) = \frac {\sqrt {2}} {2}`

So, we have to:

`arcsin (\frac {\sqrt {2}} {2}) = 45`

Answer:

Option B