Half Is Better Sine and Cosine Hipparchus of Rhodes (190 – 120 B.C.) Planetary motion Celestial sphere Position of stars were specified by angles Relate angles to a straight…

Warmup: What is wrong with this? 30⁰ 8.3 and 8.4 Trigonometric Ratios Finding Trig Ratios A trig ratio is a ratio of the lengths of two sides of a right triangle. The word…

Warmup: What is wrong with this? 30⁰ 8.3 and 8.4 Trigonometric Ratios Finding Trig Ratios A trig ratio is a ratio of the lengths of two sides of a right triangle. The word…

ANGLE ANGLE ANGULAR MEASUREMENT Angle is defined a rotation result from initial side to the terminal side An angle has “a positive” sign if its rotation is anticlockwise…

Section 12-1 How can you find the height of this triangle? One way is to use the fact that corresponding side lengths of similar triangles have the same ratio. For example,…

Angles and Their Measure Objective: To define the measure of an angle and to relate radians and degrees Trigonometry In the Greek language, the word trigonometry means âmeasurement…

Lesson #1 Lesson #1 Introduction to Trigonometry Introduction to Math 7 Who am I? What is this class about? Special types of functions, especially trigonometric ones Different…

9.5 Trigonometric Ratios RIGHT R I A N G L E TRIGOMOMETRY 1 Trigonometric Ratios A RATIO is a comparison of two numbers. For example; boys to girls cats : dogs right : wrong.…

1. INTRODUCTION TO TRIGONOMETRY DONE BY HANIYA HEDAYTH GRADE: 10TH A 2. What is trigonometry?  Trigonometry (from Greek trigōnon, "triangle" and metron, "measure"[1])…

TRIGNOMETRY IN MATHEMATICS