Teacher's Strategies for Simplifying Expressions

Teacher's Strategies for Simplifying Expressions

Assessment

Interactive Video

Mathematics

9th - 10th Grade

Hard

Created by

Thomas White

FREE Resource

The video tutorial covers the process of subtracting angles within the first quadrant, focusing on the cosine of u minus v formula. It explains how to apply this formula to specific angles and discusses various methods for simplifying trigonometric expressions. The tutorial also provides strategies for handling multiple choice questions, emphasizing the importance of understanding different forms of answers.

Read more

28 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why does the teacher prefer to stay within the first quadrant when selecting angles?

To avoid negative angles

To simplify calculations

To make the problem more complex

To use larger angles

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the teacher's preferred angle subtraction in the example?

45 degrees minus 60 degrees

60 degrees minus 30 degrees

30 degrees minus 45 degrees

45 degrees minus 30 degrees

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the significance of parentheses in the cosine formula?

They indicate the order of operations

They are optional and can be ignored

They are used to denote multiplication

They help in distinguishing between negative and positive values

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the cosine formula for u minus v, what operation is performed when the formula indicates a minus?

Subtract

Add

Multiply

Divide

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the cosine of 30 degrees according to the unit circle?

Square root of 2 over 2

1/2

1

Square root of 3 over 2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the sine of 45 degrees according to the unit circle?

1/2

1

Square root of 3 over 2

Square root of 2 over 2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the non-simplified answer for the cosine of 30 degrees minus 45 degrees?

Square root of 3 over 2 times square root of 2 over 2 plus 1/2 times square root of 2 over 2

Square root of 2 over 2 times square root of 3 over 2 plus 1/2

Square root of 6 over 4

Square root of 2 over 2 times square root of 3 plus 1 over 2

Create a free account and access millions of resources

Create resources
Host any resource
Get auto-graded reports
or continue with
Microsoft
Apple
Others
By signing up, you agree to our Terms of Service & Privacy Policy
Already have an account?