Evaluating 2x2 Determinants and Trigonometric Functions

Evaluating 2x2 Determinants and Trigonometric Functions

Assessment

Interactive Video

Mathematics

11th - 12th Grade

Hard

Created by

Thomas White

FREE Resource

The video tutorial explains how to evaluate a 2x2 determinant with trigonometric functions sec(theta) and tan(theta). It covers the multiplication of elements on the principal and secondary diagonals, and uses the trigonometric identity 1 + tan^2(theta) = sec^2(theta) to simplify the determinant calculation. The final result of the determinant is shown to be 1.

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main objective of the problem discussed in the video?

To find the value of a trigonometric function

To evaluate a 2x2 determinant

To solve a quadratic equation

To calculate the area of a triangle

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which trigonometric functions are used in the determinant discussed?

Cosecant and Secant

Secant and Tangent

Tangent and Cotangent

Sine and Cosine

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in evaluating a 2x2 determinant?

Add the elements of the rows

Subtract the elements of the columns

Multiply the elements of the principal diagonal

Divide the elements of the diagonals

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What do you do after multiplying the principal diagonal elements in a 2x2 determinant?

Multiply the secondary diagonal elements

Subtract the product of the secondary diagonal elements

Divide by the secondary diagonal elements

Add the secondary diagonal elements

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the significance of the principal diagonal in a determinant?

It is used for division

It is used for addition

It is used for subtraction

It is used for multiplication

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the significance of the secondary diagonal in a determinant?

It is used for multiplication

It is used for subtraction

It is used for division

It is used for addition

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the result of multiplying sec(theta) with sec(theta)?

sec(theta)

tan(theta)

sec^2(theta)

tan^2(theta)

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