Section 3.5 Sum and Difference Formulas
A. Sum and Difference Formulas for the Cosine Function
Sum and Difference Formulas for the Sine Function
Sum and Difference Formulas for the Tangent Function
B. Use Sum and Differenc
Practice Test 2
Instructor S. Babasyan
Name: _ _ Show your work. No work no credit
1. Convert each angle to a decimal in degrees. Round your answer to decimal places. (2)
2. Convert each angle to
form. Round your answer to the neares
Section 1.1 Graphs and Functions
This chapter deals with what a function is, how to graph functions, properties of
functions, and how functions are used in applications.
A. Rectangular Coordinates.
In this section we will
Section 3.1 The Inverse Sine, Cosine, and Tangent Functions
A. The Inverse Sine Function.
Because every horizontal line y = b, where b is between 1 and 1, intersects the graph of
y = sinx infinitely many times, it follows
Section 3.3 Trigonometric Equations
A. Solve Equations Involving a Single Trigonometric Function.
In this section we consider trigonometric equations that are true for only some values of the
variable. The values that sati
Section 5.3 Complex Plane; De Moivres Theorem
A. Definition: Complex numbers are numbers of the form
, where and are real
numbers. The real number is called the real part of a number
; the real number b
is called the imagi
Section 4.1 Applications Involving Right Triangles
A. Find the value of Trigonometric Functions of Acute angles using Right Triangles:
Definition: A triangle in which one angle is a right angle (90) is called a right trian
Section 5.1 Polar Coordinates; Vectors
A. Polar Coordinates.
The rectangular coordinate system content of horizontal line called x-axis, vertical line
called y-axis and the point of intersection the origin O.
In a polar co