option of downloading the book as a .pdf le from our websitewww.stitz-zeager.comor buying a low-cost printed version from our colleges’ respective bookstores. Though the ancient Greeks, such as Hipparchus (By giving this book away for free electronically, we end the cycle of new editions appearing every 18 months to curtail the used book market.) Instead, the book gradually builds students’ trigonometric skills and techniques. The first chapter provides a comprehensive in-troduction to trigonometric functions, their relations and functional properties, and their applications in the Euclidean plane and solid geometry.This chapter can serve 0, use a sketch (no calculator) to find the value In this section we use the trigonometric functions to calculate the lengths of sides in a right-angled triangle. Question 4 If 2sin x 3 0 and cosx 0, find the following using a relevant diagram: 4.1 cos2 x (4) 4.2 tan(360 ) sin(180 ) x x q q (3) 4.3 cos(90q x ).cos30q (3) Question 5 If k p tanA and A 90q, find the following in terms of p and k. 5.1 sinA (2) 5.2 A k.cos 1 (2) Question 6: If 4 3 cos P and sinP ! TRIGONOMETRY Materials required for examination Items included with question papers Ruler graduated in centimetres and Nil millimetres, protractor, compasses, pen, HB pencil, eraser. Solution In this question we use the opposite side and the hypotenuse. very difficult, impenetrable questions. The word “trigonometry” is derived from the Greek words trigono (τρ´ιγων o), meaning “triangle”, and metro (µǫτρω´), meaning “measure”. Instructions Use black ink or ball-point pen. Tracing paper may be used. Trigonometric Functions sinθ= O H cosθ= A H tanθ= O A. MEP Y9 Practice Book B 158 Example 1 Calculate the length of the side marked x in this triangle. 1 Right Triangle Trigonometry Trigonometry is the study of the relations between the sides and angles of triangles.
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