Calculating Angles and Lengths

Calculating Angles and Lengths

Assessment

Interactive Video

Mathematics

9th - 10th Grade

Hard

Created by

Thomas White

FREE Resource

The video tutorial guides viewers through solving a geometry problem involving triangles. It begins by introducing the problem and focuses on calculating the lengths of two pronumerals, a and b, using trigonometric functions. The tutorial demonstrates a neat trick for solving equations quickly. After finding the values of a and b, the video shows how to determine the missing pronumeral X by subtracting b from a. The tutorial concludes with a summary and directs viewers to additional resources on the website.

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16 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main focus of the initial part of the video?

Learning about algebraic equations

Exploring the concept of calculus

Understanding the properties of a circle

Focusing on the big triangle

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the pronumeral 'a' used to represent?

The area of the triangle

The height of the triangle

The total length of the big triangle

The width of the triangle

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which trigonometric function is used to find 'a'?

Tangent

Cosine

Secant

Sine

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the angle used in the big triangle calculation?

90 degrees

60 degrees

54 degrees

28 degrees

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the neat trick mentioned for solving 'a'?

Using a protractor

Swapping the fraction terms

Cross-multiplying

Using a calculator

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the value of 'a' after calculation?

60.0

112.8

43.6

28.0

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What angle is used to calculate 'b' in the smaller triangle?

60 degrees

90 degrees

54 degrees

28 degrees

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