What is the value of sine of begin argument 45 degrees end argument?

question 1 options:

fraction numerator square root of 2 over denominator 2 end fraction

fraction numerator square root of 3 over denominator 2 end fraction

square root of 2

square root of 3

Option A

fraction numerator square root of 2 over denominator 2 end fraction

Step-by-step explanation:

The answer can be obtained using a calculator.

It corresponds to a notable identity

sin (45) =   / 2

sin (45) = 0.7071

/ 2  = 0.7071

Please see attached picture

The third and fourth box.

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.