Trigonometry Hand Trick Techniques

The video introduces a simple trigonometry trick using your hand to memorize sine and cosine values for common angles: 0°, 30°, 45°, 60°, and 90°. By labeling fingers and using a square root method, viewers can easily calculate these trigonometric values. The video also explains how to find the tangent by dividing sine by cosine, making it a handy tool for quick calculations.

What is the main purpose of the trigonometry trick introduced in the video?

• To solve complex trigonometric equations

• To memorize sine and cosine of basic angles

• To learn advanced calculus

• To understand the history of trigonometry

Which angles are labeled on the hand in the trigonometry trick?

• 15°, 30°, 45°, 60°, 75°

• 0°, 30°, 45°, 60°, 90°

• 5°, 25°, 45°, 65°, 85°

• 10°, 20°, 30°, 40°, 50°

How many fingers are used to represent the sine value for 60 degrees?

• Four fingers

• One finger

• Two fingers

• Three fingers

What is the cosine value for 60 degrees using the hand trick?

• √2/2

• 1/2

• 0

• √3/2

What is the sine value for 0 degrees using the hand trick?

• √2/2

• 1/2

• 0

• 1

What is the cosine value for 0 degrees using the hand trick?

• √3/2

• 0

• 1

• 1/2

How many fingers are used to represent the sine value for 45 degrees?

• One finger

• Two fingers

• Four fingers

• Three fingers

What is the cosine value for 45 degrees using the hand trick?

• √3/2

• 0

• 1/2

• √2/2

How is the tangent of an angle calculated using the hand trick?

• By dividing sine by cosine

• By subtracting cosine from sine

• By adding sine and cosine

• By multiplying sine and cosine

What is the main advantage of using the hand trick for trigonometry?

• It is used for complex calculations

• It is a historical method

• It is only for advanced learners

• It requires no calculator