1. Terms of Endearment
Trigonometric Ratios: 9.5

2. SOHCAHTOA
• Sine = Opposite/Hypotenuse
• Cosine = Adjacent/Hypotenuse
• Tangent = Opposite/Adjacent
• Use the letters of the saying to help
remember the order

3. Calculator 101
• You will want to know your
calculator, because it is different on
each calculator
• Most people that have a display that
shows you what you type in will type
sin, cos, or tan first…followed by the
number and then hit =
• Others will hit the number first,
followed by the trig function and
won’t need to hit =