Some People Have Curly Black Hair Thickly Plastered Back

Mnemonic Device:

• Some People Have Curly Black Hair Turning Purple Blue
• Some People Have Curly Black Hair Thickly Plastered Back

Explanation: to remember trigonometric functions by first letters.

• Sine = Perpendicular/Hypotenuse
• Cosine = Base/Hypotenuse
• Tangent = Perpendicular/Base