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Pre-Algebra: Chapter 13-6
Sine, Cosine and Tangent
The famous Native American SOHCAHTOA is a short mnemonic aid to remember the sine, cosine and tangent functions FOR RIGHT TRIANGLES only.
- The sine of an angle in a right triangle is the OPPOSITE SIDE / HYPOTENUSE
- The cosine of an angle is the ADJACENT SIDE / HYPOTENUSE
- The tangent of an angle is the OPPOSITE SIDE / ADJACENT SIDE
To go backwards to find an angle, we can use our calculator, type in the value and use the shift sine, cosine or tangent key to find the angle that we need. OR, we can use the tables if we don’t have a calculator.
Here is a cool link with some examples.
Algebra: Final Exam Review Packet
Make sure you do ALL the problems and bring your questions to class!