# Two Old Angels Skipped Over Heaven, Carrying Ancient Harps

Mnemonic Device:

• Two Old Angels Skipped Over Heaven, Carrying Ancient Harps

Explanation: the equations for Tangent, Sine, and Cosine.

• O stands for opposite, A stands for adjacent, and H stands for hypotenuse.
• Tangent = Opposite/Adjacent (Two Old Angels)
• Sine = Opposite/Hypotenuse (Skipped Over Heaven)
• Cosine = Adjacent/Hypotenuse (Carrying Ancient Harps)

Variation:

• Two Old Aunts, Sitting On Horseback, Catching A Husband. Any Old Time, Husbands Are Caught, Hail Or Shine.
• Tangent = Opposite/Adjacent (Two Old Aunts)
Sine = Opposite/Hypotenuse (Sitting On Horseback)
Cosine = Adjacent/Hypotenuse (Catching A Husband)
• Inverse functions:
• Cosine = Adjacent/Hypotenuse (Husbands Are Caught)
• Tangent = Opposite/Adjacent (Any Old Time)
• Sine = Opposite/Hypotenuse (Hail Or Shine)

Additional Note: We are looking for additional information for the variation of this mnemonic (inverse functions). Do you have suggestions or corrections for this? If so, please submit a comment!