
Understanding Mathematical Identities and Trigonometry

Interactive Video
•
Mathematics
•
9th - 12th Grade
•
Hard

Thomas White
FREE Resource
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a mathematical identity?
An equation with one solution
An equation with no solutions
An equation true for all values of variables
An equation true for some values of variables
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a characteristic of an identity?
True for all values of the variable
Can be used to prove other identities
Has a single solution
Both sides of the equation are equivalent
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the sine of an angle in terms of a right triangle?
Adjacent side over opposite side
Hypotenuse over opposite side
Opposite side over hypotenuse
Adjacent side over hypotenuse
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you prove a trigonometric identity?
By using a calculator
By solving for the variable
By showing both sides of the equation are equivalent
By finding a single solution
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the Pythagorean identity?
sin^2(theta) + cos^2(theta) = 1
tan(theta) = sin(theta) / cos(theta)
sin(theta) = 1 / cos(theta)
cos^2(theta) - sin^2(theta) = 1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which identity is used to express tan(theta) in terms of sine and cosine?
Pythagorean identity
Quotient identity
Reciprocal identity
Sum identity
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a helpful tip when proving identities?
Always start with the right side
Guess the solution
Convert all terms to sine and cosine
Use a calculator for verification
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