Applying the Addition & Subtraction Formulas (Grades 11-12)

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Applying the Addition & Subtraction Formulas

1. 
What is the exact value of [math]tan(75°) ?[/math]
  1. [math]-2+sqrt(3)[/math]
  2. [math]2+sqrt(3)[/math]
  3. [math]1[/math]
  4. [math]2-sqrt(3)[/math]
2. 
What is the exact value of [math]sin(105°) ?[/math]
  1. [math]1/2(sqrt(3)+sqrt(2))[/math]
  2. [math]1/4(sqrt(2)-sqrt(6))[/math]
  3. [math]1/4(sqrt(6)+sqrt(2))[/math]
  4. [math]1/4(sqrt(6)-sqrt(2))[/math]
3. 
What is the exact value of [math]tan(255°) ?[/math]
  1. [math]-2-sqrt(3)[/math]
  2. [math]-2+sqrt(3)[/math]
  3. [math]2-sqrt(3)[/math]
  4. [math]2+sqrt(3)[/math]
4. 
What is the exact value of [math]tan(165°) ?[/math]
  1. [math]2-sqrt(3)[/math]
  2. [math]-2-sqrt(3)[/math]
  3. [math]2+sqrt(3)[/math]
  4. [math]-2+sqrt(3)[/math]
5. 
What is the value of [math]cos(165°) ?[/math]
  1. [math]1/4(sqrt(2)-sqrt(6))[/math]
  2. [math]-1/4(sqrt(2)+sqrt(6))[/math]
  3. [math]1/4(-sqrt(2)+sqrt(6))[/math]
  4. [math]1/2(-sqrt(2)+sqrt(3))[/math]
6. 
What is the exact value of [math]cos(105°) ?[/math]
  1. [math](sqrt(2)-sqrt(6))/4[/math]
  2. [math]-(sqrt(2)+sqrt(6))/4[/math]
  3. [math]-1/2 + sqrt(6)/4[/math]
  4. [math](sqrt(6)-sqrt(2))/4[/math]
7. 
What is the exact value of [math]sin(345°) ?[/math]
  1. [math]1/2(sqrt(2)-1)[/math]
  2. [math]-1/4 (sqrt(2)+sqrt(6))[/math]
  3. [math]1/4(sqrt(6) - sqrt(2))[/math]
  4. [math]1/4(sqrt(2) - sqrt(6))[/math]
8. 
What is the exact value of [math]cos(285°) ?[/math]
  1. [math]1/2 (1 - sqrt(2))[/math]
  2. [math]-1/4 (sqrt(6) - sqrt(2))[/math]
  3. [math]1/4 (sqrt(6)-sqrt(2))[/math]
  4. [math]1/4 (sqrt(2) + sqrt(6))[/math]
9. 
What is the exact value of [math]sin(15°) ?[/math]
  1. [math]sqrt(6)/4[/math]
  2. [math]1/2(sqrt(3)-sqrt(2))[/math]
  3. [math]1/4(sqrt(6)+sqrt(2))[/math]
  4. [math]1/4(sqrt(6)-sqrt(2))[/math]
10. 
What is the exact value of [math]sin(195°) ?[/math]
  1. [math]-1/2(sqrt(2)+sqrt(3))[/math]
  2. [math]-1/4(sqrt(6) + sqrt(2))[/math]
  3. [math]1/4(sqrt(2) - sqrt(6))[/math]
  4. [math]1/4(sqrt(6) - sqrt(2))[/math]

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