Lesson 19 - 6.4 Graphs of Sine and Cosine

Pg. 256: 3,6,17,20,23,24,30

Lesson 19 - 6.4 #3 Find parameters of a trig function from formula:

Midpoint:

D = 5

Amplitude:

A = 6

Lesson 19 - 6.4 #6 Find parameters of a trig function from graph:

D = -2

A = 3

When x = 0, max., so cos. (x).

Lesson 19 - 6.4 #17 Given that sin A = sin B and the graph below:

(a) If

(b) If A = 1, then

Lesson 19 - 6.4 #20 Identify graphs of the transformation of y = sin(x).

Lesson 19 - 6.4 #23 Find exact coordinates of a circle shown below:

(x, y) =

()

Lesson 19 - 6.4 #24 Find exact values for the following:

(a) Q-II for angle :

(b) Q-IV for angle :

(c) Q-III for angle :

(d) Q-IV for angle :

(e) Q-I for angle :
Lesson 19 - 6.4 #30 Find formula and coordinates for a circle shown below:

Formula for circle with center (h, k) is:

So formula is

To graph of circle plot:

The x-coordinates of point P with angle is: