What are the measures of the two angles?

Ineed me i stuck and i don’t want to get it wrong

Find the slope of the line passing through a pair of points

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%