Trigonometric functions

Trigonometric functions

11th Grade

18 Qs

quiz-placeholder

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Trigonometric functions

Trigonometric functions

Assessment

Quiz

Mathematics

11th Grade

Practice Problem

Hard

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18 questions

Show all answers

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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