Which number produces a rational number when multiplied by 1/3

At a pizza shop 70% of the customers order a pizza 25% of the customers order a salad and 15% of the customers order both a pizza and a salad if s customer is chosen at random what is the probability that he or she orders either a pizza or a salad

Find all the angles that satisfy the equation cos(θ)=32

What is the measure of angle a and angle c ?