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Calculate the perimeter and area of this triangle. Give your answers correct to 2 decimal places. 9. A ramp has length 6 m and is at an angle of 50 ° above Applying Trigonometric Functions: Word Problems. 7. Reciprocal Trigonometric Functions: Cosecant, Secant and Cotangent. 8. Answers. 9. Helpful Websites Mathematics_part_ _II_(solutions) for Class 9 Math Chapter 8 - Trigonometry. Download PdfDownload Pdf. Share with your friends Share Share Share twitter. Trigonometry is a branch of mathematics that focuses on relationships between the sides and angles of triangles. The word trigonometry comes from the Latin. 9) What determines if a side is opposite or adjacent? The angle that you are choosing to do the trig with. 10) What does SOHCAHTOA stand for?trigonometry is the study of relationships between the sides and angles of a triangle. 9. In triangle ABC, right-angled at B, if tan A =. 4 Write the trigonometric ratio which must be used in order to find the value of the 9 Find the size of angle θ correct to the nearest degree, This textbook was written with you in mind. If you attend class, work hard, and read and study this book, you will build the knowledge and skills you need to be Math Class IX. 1. Question Bank. TRIGONOMETRY. Q.1. From the given figure, write down the values of : (i) sin B. (ii) tan B 9 16 25 10 1 9 (3).