What property of a wave determines its pitch?
A.
the medium
B.
the amplitude
C.
the rarefaction
D.
the frequency

and 1and 1

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

answerscientific theory;