
Finding Trig Values with the Left Hand Trick

Interactive Video
•
Mathematics
•
8th - 12th Grade
•
Hard
Standards-aligned

Aiden Montgomery
FREE Resource
Standards-aligned
Read more
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of the left hand trick in trigonometry?
To simplify the memorization of trigonometric values
To calculate the area of a circle
To measure angles precisely
To solve algebraic equations
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which finger represents the angle of 90 degrees or PI/2?
Thumb
Index finger
Middle finger
Pinky
Tags
CCSS.HSF.TF.A.2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you determine the cosine value using the left hand trick?
Count fingers to the left of the folded finger
Divide the number of fingers by 2
Count fingers to the right of the folded finger
Multiply the number of fingers by 2
Tags
CCSS.HSF.TF.A.2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the cosine of PI over 3 according to the left hand trick?
Square root of 2 over 2
0
Square root of 3 over 2
1/2
Tags
CCSS.HSF.TF.A.2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you find the sine value of an angle using the left hand trick?
Count fingers to the left of the folded finger
Multiply the number of fingers by 2
Divide the number of fingers by 2
Count fingers to the right of the folded finger
Tags
CCSS.HSG.SRT.C.7
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the sine of PI over 6 using the left hand trick?
1/2
0
Square root of 2 over 2
Square root of 3 over 2
Tags
CCSS.HSF.TF.A.2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the tangent of an angle calculated using the left hand trick?
By subtracting cosine value from sine value
By multiplying sine and cosine values
By dividing sine value by cosine value
By adding sine and cosine values
Tags
CCSS.HSG.SRT.C.6
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