Objective: For students to be able to identify the quadrant in which the terminal side of a 1100 degree angle lies. Standards: G-SRT 6 HW: p. 58, 5, 7, 13, 15, 19, 23, 25, 33, 35, 41, 43, 51, 61, 69 Assessment: Observe understanding during pear deck

Trigonometry Unit 1, Chapter 2

What is Trigonometry? Hint: Look at the word “trigonometry” and see if any parts of that word resembles words that you are familiar with?

Trigonometry is a branch of mathematics focused on the measures of the sides and angles of a triangle.

Angles in Standard Position An angle is in standard position of its initial side is along the positive x-axis and its vertex is at the origin.

What trig do you remember from geo?

(also show in terms of root/2) “ The sooner you memorize this table, the happier you’ll be.” -Anonymous

Vocab Conterminal Angles – Two angles in standard position that share a _______________

Find the six trigonometric functions of angle A if y = 6 and r =10.

Cofunctions Look at the table we did a few slides back. Notice anything interesting? Hint: It has to do with CO functions

Now compare tangent to cotangent and secant to cosecant.

Cofunction theorem

Why does this happen?

Because right triangles that’s why.

Guided Practice Sin 47 = cos ___ Cot 1 = tan ___ Sec 100 = csc ___ Cos -2 = Tan x =

Lets discuss the following…. In what quadrants will sin be positive? Negative? What about the other trig functions? Is there a way to remember these quadrants?

NAME THE QUADRANT!!!!

HW: p. 58, 5, 7, 13, 15, 19, 23, 25, 33, 35, 41, 43, 51, 61, 69