
Trigonometric Identities - Sum & Difference Identities
Authored by Zack Arenstein
11th - 12th Grade
Used 3+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Calculate the sin(15°)
sin(45°)cos(30) - sin(30°)cos(45°)
sin(45°)cos(30) + sin(30°)cos(45°)
cos(45°)cos(30) - sin(30°)sin(45°)
cos(45°)cos(30) + sin(30°)sin(45°)
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Calculate the cos(75°)
sin(45°)cos(30) - sin(30°)cos(45°)
sin(45°)cos(30) + sin(30°)cos(45°)
cos(45°)cos(30) - sin(30°)sin(45°)
cos(45°)cos(30) + sin(30°)sin(45°)
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
If the sin(A) = 5/13, calculate the cos(A).
Note: sin2(x) + cos2(x) = 1
Write these numbers down, you will need them later.
12/13
4/5
3/5
7/25
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
If the cos(B) = 4/5, calculate the sin(B).
Note: sin2(x) + cos2(x) = 1
Write these numbers down, you will need them later.
12/13
4/5
3/5
7/25
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Calculate sin(A - B)
-16/65
56/65
-48/65
72/65
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Calculate sin(A + B)
-16/65
56/65
-48/65
72/65
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Calculate cos(A + B)
-16/65
56/65
-48/65
72/65
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