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- Calculus
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    - Chain Rule 2
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    - Implicit Differentiation 6
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    - Definite Integrals 2
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    - Exact Equations 1
    - Homogeneous Equations 4
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    - Maclaurin Series 5
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    - Sieve of Eratosthenes 5
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    - Number Puzzles 2
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12th Grade Half Angle Formulas Quizzes, Questions & Answers

12th Grade

Top Trending Half Angle Formulas Quizzes

Can you put it all together? In this final quiz, you’ll tackle sine, cosine, and tangent half-angle identities side by side. From proofs and simplifications to exact evaluations and quadrant checks, it’s a full...

Questions: 20 | Attempts: 13 | Last updated: Dec 2, 2025

Sample Question 1
Which formula expresses sin(θ/2)?

±√((1+cosθ)/2)

±√((1−cosθ)/2)

±√((1+sinθ)/2)

±√((1−sinθ)/2)

Sample Question 2
Which formula expresses cos(θ/2)?

±√((1−sinθ)/2)

±√((1−cosθ)/2)

±√((1+sinθ)/2)

±√((1+cosθ)/2)

Cosine Half Angle

Did you know you can find the cosine of half an angle using only the full angle? In this quiz, you’ll practice applying and proving the half-angle formula for cosine, while working with exact values, identities, and...

Questions: 20 | Attempts: 11 | Last updated: Dec 2, 2025

Sample Question 1
Which formula expresses cos(θ/2)?

±√((1+cosθ)/2)

±√((1−cosθ)/2)

±√((1+sinθ)/2)

±√((1−sinθ)/2)

Sample Question 2
If cos θ = 3/5 and θ is in quadrant IV, find cos(θ/2).

2/√5

−2/√5

1/√5

−1/√5

12th Grade Half Angle Formulas Quizzes, Questions & Answers

Top Trending Half Angle Formulas Quizzes

Recent Half Angle Formulas Quizzes