Trigonometric functions
Authored by PRP 4U
Mathematics
11th Grade
Used 80+ times
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18 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
2 cos x cos y =
Cos ( x+y) - cos ( x-y)
Cos ( x+y) +cos ( x-y)
Sin ( x+y) - sin ( x-y)
Sin ( x+y) + sin ( x-y)
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
- 2 sin x sin y =
Sin ( x+y) - sin ( x-y)
Sin ( x+y) +sin ( x-y)
Cos ( x+y) +cos ( x-y)
Cos ( x+y) - cos ( x-y)
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Cos 3x =
4 cos²x- 3cos x
4 cos x- 3cos x
4 sin²x- 3cos x
4 sin²x- 3sinx
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Cos C + cos D =
2 sin( x+y /2) cos ( x-y/2)
2 cos ( x+y /2) cos ( x-y/2)
2 sin ( x+y /2) sin( x-y/2)
- 2 cos ( x+y /2) cos ( x-y/2)
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Sin 3x =
3 cos x - 4 cos³x
3 sin x - 4 cos³x
3 sin x - 4 sin³x
3 cos x - 4 sin³x
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
1+ cot² x =
Cos²x
Sec²x
Cosec²x
tan²x
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Cos ( x-y)
Cos x cos y + cos x cos y
Cos x sin y+ cos x sin y
Cos x cos y - sin x sin y
Cos x cos y + sin x sin y
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