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# Trigonometry Video Lessons

### Any Angle Trigonometry Functions

### Draw the Graph of Sine Functions

### Property of a Sine Graph

### Sine Graph Transformation

### Write Analytical Expression of a Sine Graph

### Sine Graph Application

### Draw the Graph of Cosine Functions

### Draw the Graph of tan x

### Trigonometry Equation

### Find the angle a

- Given the angle a, find sin(a)
- Given cos(a) = -3/5, find tan(a)
- Given tan(A) = -4/3, find sin(A)
- Given cos100
^{o}, find sin10^{o} - Any angle trigonometry function

- Draw the graph of y = sin x, x from -pi to pi
- Draw the graph of y = sin x, x from 0 to 2pi
- Draw graph of y = sin2x
- draw graph of y = sin(x/2)
- draw y = sin(x + pi/4) and y = sin(x - pi/2)
- Draw graph of y = sin(2x - pi/4)
- Draw graph of y = sin(2x + pi/4)
- Draw the graph of y = sin(2x - pi/3)
- Simplify sin(2x/3 + 3pi/2)
- Draw the graph of y = cos(x) sin(x)

- f(x) = sin(2x + pi/4) is symmetry to
- Decrease interval of y = sin(2x + pi/4)
- Find the monotonic increase intervalof a function

- Transform graph y = sin(x) to y = sin(x/2 - pi/6)
- Write functions based on wave transformation
- Shift and shrink y = sin(2x - pi/6), find function

- Write functions based on wave transformation
- Given graph, find its function f(x)
- Given graph, write the its function
- Given y = Asin(Bx + C), find A, B and C
- Given y = Asin(Bx + C) + b, find A, B, C and b
- Write function based on given sine graph
- Find the analytical expression of the sine graph

- Draw graph of y = cos(x),x in [-pi, pi]
- Draw the graph of y = cos x, x in [0, 2pi]
- How to draw the graph of y = cos2x?
- Draw graph of y = -cos(2/3)x
- Draw graph of y = 1 + cos(x)
- Values of special angles and y = cos(x)
- Draw the graph of y = -cos(x pi/2)
- Draw graph of y = cos(2x + pi/4)

The purpose of this website is to help students understand the topic of the mathematics talked in class. Help students improve the ability of self-studding. Hope students could listen carefully to the video and do the example your-self in order to find which concept to apply to solve this kind of problem, and review them later. Hope students could spend time on most important things such as, reading, writing, mathematics and science.

Mathematics can be self-learning. By good understanding mathematics, you can graduate from college no more than four years. So, you need to set a goal and works for your future, make progress each day, and get confident about yourself. Do each example yourself will help deep understanding those concepts in these topics. Opportunity is always for those who are prepared.

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