Tuesday, September, 11
Lesson 7.1: Trigonometrical Ratios of an Obtuse Angle (cont.)
Objectives

Define and use sin, cos, and tan on coordinate plane

Express trig functions for obtuse angles in terms of trig functions
Key Concepts
trig functions, angles, radians
Homework
Exercise 7.2: 1 (all), 2 (all)
Thursday, September, 13
Lesson 7.2: Cosine Rule
Objectives

Define and use sin, cos, and tan on coordinate plane

Express trig functions for obtuse angles in terms of trig functions

Solving problems using cosine rule
Key Concepts
cosine rule
Homework
Exercise 7.2: 12