Ashley's BOB part3

i think i'm going ok on trigonometric identites although the pre-test was hard. for me anyways because sometimes i don't understand the question and sometimes i don't know how to solve it but i'm understanding now. i think. i just need to practice lots especially on the proving part because i get stuck a lot and i need to start recognizing the identites too but i sort of understand double angles now. so the test is on friday. good luck guys!