If sine theta equals three eighths , theta in quadrant ii, find the exact value of (a) cosine theta (b) sine (theta plus startfraction pi over 6 endfraction )(c) cosine (theta minus startfraction pi over 3 endfraction )(d) tangent (theta plus startfraction pi over 4 endfraction )

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample