What is the exact value of sine of open paren 112.5 degrees close paren ?
A
the fraction with numerator square root of 2 plus square root of 2 end root and denominator 2B
the fraction with numerator 2 and denominator square root of 2 minus square root of 2 end rootC
the fraction with numerator square root of 2 minus square root of 2 end root and denominator 2D
the fraction with numerator 2 and denominator square root of 2 plus square root of 2 end root