Simplifying Trigonometric Expressions

The video tutorial explains how to simplify trigonometric expressions by converting them into terms of sine and cosine. It demonstrates the use of trigonometric identities, particularly the Pythagorean identities, to simplify expressions into a single trigonometric function. The tutorial covers two examples, showing the process of finding a common denominator, performing substitutions, and simplifying fractions to achieve the final simplified form.

What is the primary goal when simplifying trigonometric expressions?

• To express them in terms of multiple trigonometric functions

• To convert them into algebraic expressions

• To express them in terms of a single trigonometric function

• To eliminate all trigonometric functions

Which identity is used to convert cosecant theta to sines and cosines?

• Cosecant theta = cosine theta / sine theta

• Cosecant theta = 1 / sine theta

• Cosecant theta = sine theta / cosine theta

• Cosecant theta = 1 / cosine theta

What is the common denominator used when subtracting fractions in the first expression?

• Sine theta

• Tangent theta

• Cosine theta

• Secant theta

How is the expression 1 - sine squared theta simplified using Pythagorean identities?

• It is replaced with cotangent squared theta

• It is replaced with secant squared theta

• It is replaced with cosine squared theta

• It is replaced with tangent squared theta

Tags

CCSS.6.NS.A.1

What operation is used to simplify the division of fractions in the first expression?

• Subtraction

• Division by the reciprocal

• Addition

• Multiplication by the reciprocal

What is the initial step in simplifying the second trigonometric expression?

• Convert everything to sines and cosines

• Convert everything to tangent and cotangent

• Convert everything to algebraic terms

• Convert everything to secant and cosecant

What is the common denominator used in the second expression simplification?

• Tangent theta

• Cosine theta

• Secant theta

• Sine theta

How is the expression 1 - cosine squared theta simplified using identities?

• It is replaced with cotangent squared theta

• It is replaced with secant squared theta

• It is replaced with tangent squared theta

• It is replaced with sine squared theta

What is the final simplified form of the second expression?

• Cosecant theta

• Sine theta

• Tangent theta

• Cosine theta

What is the relationship between 1 divided by sine theta and another trigonometric function?

• It equals cotangent theta

• It equals cosecant theta

• It equals secant theta

• It equals tangent theta