Busy. Please wait.
or

Forgot Password?

Don't have an account?  Sign up
or

taken

why

Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

Already a StudyStack user? Log In

Reset Password
Enter the email address associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know (0)
Know (0)
remaining cards (0)
Save
0:01

 Flashcards Matching Hangman Crossword Type In Quiz Test StudyStack Study Table Bug Match Hungry Bug Unscramble Chopped Targets

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size     Small Size show me how

# Math PC Review

### Pre-Calc Final Review : Pythagorean identities, double and half angle formulas

QuestionAnswer
Pythagorean identities cos^2θ+sin^2θ = 1, 1+tan^2θ= sec^2θ, cot^2θ+1= csc^2θ
Double Angle cos2θ cos^2θ-sin^2θ, 2cos2θ-1, 1-2sin2θ
Double Angle sins2θ 2sinθcosθ
Double Angle tan2θ 2tanθ/1-tan2θ
Half Angle cosθ cos2(θ/2)-sin2(θ/2), 2cos2(θ/2)-1, 1-sin2(θ/2)
Half Angle sinθ 2sin(θ/2)cos(θ/2)
Half Angle tanθ 2tan(θ/2) / 1-tan2(θ/2)
Reciprocal Identities sinθ=(1/cscθ), cosθ=(1/secθ), tanθ=(1/cotθ), cscθ=(1/sinθ), secθ=(1/cosθ), cotθ=(1/tanθ)
Quotient Identities tanθ = (sinθ/cosθ), cotθ= (cosθ/sinθ)
Created by: Chippen_22