Leaving Cert Higher Level Maths 2020 Paper 2 Question 4 Solutions

This is question 4 from the leaving cert higher level maths 2020 paper 2. It is a trigonometry and geometry question. In part (a) we solve a trigonometric equation using a reference angle and the unit circle. In part (b) we use the area of a sector formula and the area of a triangle formula 1/2absinC.