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Match each identity family

Exercise and reference answers

Matching pairs
  1. Left
    Pythagorean
    Right
    Built on right triangle properties
  2. Left
    Even-odd
    Right
    Relates an angle to its negative
  3. Left
    Reciprocal
    Right
    Pairs a function with its reciprocal
  4. Left
    Quotient
    Right
    Writes tan and cot as ratios
  5. Left
    Double-angle
    Right
    Sum formulas with both angles equal
  6. Left
    Half-angle
    Right
    Values for an angle cut in half
Instructions
Tap a name on the left, then tap the description that fits it.

Explanation

_Source: OpenStax Algebra and Trigonometry, section 9.3 Double-Angle, Half-Angle, and Reduction Formulas_
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