1. The Present Perfect Tense Form and use 2. The plane has landed safely. 3. They have graduated. Congratulations! 4. Federerhas lost the semifinal match in Melbourne . 5.…
1. CHAPTER 1:TRIGONOMETRY 2 Why study these trigonometric graphs? Chapter 1 : Trigonometry 2 2. The trigonometric graph are probably the most commonly use in all areas ofscience…