Can anyone help me find the missing angle which is “a”

Writing the simplest form of a fraction means the numerator and the denominator have no common factors other than 1.a. trueb. false

Customers at an ice-cream shop took a survey .the results showed that 144 customers rated the shop as being "very satisfactory ."this number represented 45%of the total nunber of customers who took the survey

Solve 2 - 3 cos x = 5 + 3 cos x for 0° ≤ x ≤ 180° a. 150° b. 30° c. 60° d. 120°