Have an account?
Skip to Content
Build your own quiz
Suggestions for you
10 questions
Show Answers
See Preview
- 1. Multiple Choicesin2u =(sinu)(cosu)2(sinu)(cosu)(sinu)^22(sinu)^2
- 2. Multiple Choicecos2u =2(sinu)(cosu)(cosu)^2 - (sinu)^22(cosu)^2 - 2(sinu)^2 - (cosu)^2
- 3. Multiple ChoiceIf cosx = - 4/5, find csc if in quadrant II1/2-3/55/3√3/2
- 4. Multiple Choice
If cosx = - 4/5, find secx.
-5/4
-3/5
5/3
√3/2
- 5. Multiple ChoiceFind the exact value of sin 2x if sin x = 12/13 and x is in the first quadrant.120/16925/16960/1695/13
- 6. Multiple Choice
Using the second identity, find Cos(50)sin2(25) - cos2(25)cos2(50) - sin2(50)cos2(25) - sin2(25)sin2(50) - cos2(50) - 7. Multiple ChoiceUsing the first identity, find Sin(180)2sin(90)cos(90)2sin(180)cos(180)sin(90)cos(90)sin(180)cos(180)
- 8. Multiple ChoiceUsing the third identity, find Cos(40)2cos2 (40) - 12cos2 (20) - 12cos2 (20) + 12cos2 (40) + 1
- 9. Multiple ChoiceUsing the fourth identity, find Cos(120)1-2sin2(120)1+2sin2(120)1+2sin2(60)1-2sin2(60)
- 10. Multiple ChoiceUse a double-angle identity to find the exact value of each expression
cos θ = 4/5 and 270° < θ < 360°
Find sin 2θ-1/524/25-24/25-25/24 - Answer choicesTagsAnswer choicesTags