Trigonometric Ratios Using Hand Trick

What is the purpose of marking angles on each finger in the hand trick?

• To remember the order of operations

• To improve finger dexterity

• To calculate trigonometric ratios

• To identify the dominant hand

How do you calculate the sine of 30 degrees using the hand trick?

• Count fingers to the left, take the square root, and divide by 2

• Count fingers to the right, take the square root, and divide by 2

• Count fingers to the right, square them, and divide by 2

• Count all fingers, take the square root, and divide by 2

What is the cosine of 0 degrees using the hand trick?

• 0

• 1

• 2

• 0.5

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

• By dividing sine by cosine

• By subtracting cosine from sine

• By multiplying sine and cosine

• By adding sine and cosine

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