Trigonometric Functions and Identities
Interactive Video
•
Mathematics
•
9th - 12th Grade
•
Practice Problem
•
Hard
+1
Standards-aligned
Ethan Morris
FREE Resource
Standards-aligned
Read more
9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of using double angle identities in this video?
To find the derivative of functions
To calculate integrals
To solve quadratic equations
To simplify and evaluate trigonometric expressions
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of simplifying cosine squared A minus sine squared A?
Cosine of 2A
Sine of 2A
Secant of 2A
Tangent of 2A
Tags
CCSS.HSF.TF.C.9
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If A equals pi/12, what is cosine of 2A?
Secant of pi/6
Tangent of pi/6
Sine of pi/6
Cosine of pi/6
Tags
CCSS.HSG.SRT.C.7
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the cosine of a 30-degree angle?
1/2
Square root of 3 divided by 2
Square root of 2 divided by 2
1
Tags
CCSS.HSF.TF.C.9
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which identity is used for the second expression involving 2 cosine of pi/4 times cosine pi/4?
Secant of 2A
Sine of 2A
Cosine of 2A
Tangent of 2A
Tags
CCSS.HSF.TF.A.2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the value of sine of pi/2?
Square root of 2 divided by 2
1
0
-1
Tags
CCSS.HSF.TF.C.8
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the simplified form of 2 cosine squared pi/2 minus 1?
Sine of pi
Secant of pi
Cosine of pi
Tangent of pi
Tags
CCSS.HSF.TF.A.2
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